Agreed. If you’re in the US the Elex is a great idea. I just didn’t think about it since I’m in Europe 
Elex is probably the best dynamic for the price.
Ananda probably the best planar.
Close in quality, both excellent soundstagers and good defined bass. Just a different dynamic due to the driverdifference.
Hi, thank you for your suggestions!
I considered the Elex but since not in USA and while I can import those I scared about the many quality issue reports so I rather not hehe.
About the Ananda, actually those looks really nice and definitely will check it out the only issue I noctice on those is that 8k peak. Would Ananda offer more body than Sundara?
always find it interesting to see what people go with nonetheless, I will throw in a recommendation for you here since you really enjoyed the sennheiser perhaps look into focals like the elex. it does have some treble presence but may be in line with what your looking for. As an owner of r70x thats a flip of a coin but you may like that one as well
Hifiman doesn’t really have good bass tones so I can’t really recommend those… if you can’t get elex you could always snag elear and throw clear pads on it… gets it remarkably close to the elex signature.
Stay away from Beyers because of your stated treble proclivities. I can find you a review that suggests properly powered the 600 ohm is a more mellow treble than the 250 ohm variant. If you’re stating treble sensitivity, these little baby steps within Beyer are not worth exploring.
Elex makes a lot of sense as many mentioned. I would not exclude Hifiman. The bass extension on Sundara/Ananda are in-line with what you’re seeking, I think. Also, very responsive to EQ, which has not been mentioned, but given a lot of what you’ve said - I would consider if you aren’t using.
What are you using for signal/power?
I think as much as I would like to get an Elex, since I need to import those I prefer stay away, as even here there’s a lot of guys getting quality issues with drop, now add not being in the us 
Yes, unfortunately Elear are out of my current budget.
That’s a good advice, after all I tried 600 ohm version and not really liked its sound signature.
Well honestly I prefer no depend on EQ even if that reduces my options as I like just plug and play.
Ares II Dac feeding RNHP and / or Gilmore Lite MKII
ATM I am leaning to order Sundara and ATH r70x and see how compares vs HD 600 on my setup however I open to other alternatives 
Seems good. Very different fit/weight and driver type. Will be interested to see how this plays out. Enjoy!
Thank you all for your help and suggestions, I ended up ordering the ATH r70x and the Sundara to try them both, hope I keep one of those, if no the Ananda will follow 
Cheers!
Personally I enjoy the Harman Target EQ from oratory1990, I boost the 105 Freq more as well, but I really like bass.
Problem is the added price often drives them out of their otherwise interesting price brakcet.
For me, the Elex would be… 989$ for me, including shipping and taxes and all that.
It’s a great value at 700… But is it at 1000?
I got mine for the “low” sale price of $600.00. Landed in Canada, they were well over $1,000.00 in Canadian money. Very expensive at the time, to me, but I have no regrets. Awesome headphones and half the price of Clears.
I’m talking $1000 US by the time they get here in Europe (could’ve said 843,21 euros but nobody on the forum knows what a euro is haha).
1255 CAD for you canadians.
That is pricey! What would Clears cost you? I assume you could buy those locally?
Yup. I could get them for around 1100 euro/1300 USD/ 1637 CAD
Not planning on though I was just making a point that the Elex (and other drops) are great value only when you don’t have to add 25-35% in taxes. and over $100 in shipping
Geography rules. 
I can get Elex’s almost $300.00 cheaper than you and you can get Clears almost $300.00
cheaper than me.
Us Canadians do whine about extra fees/taxes, but Europe has it rougher for a lot of products and poor Australia…
RIP Australia
Europe only relly has it with american products… Which I know you guys believe is superior to anything else 
but we got amazing german engineering without extra taxes!!
I am very partial to several German products in my collection. Any preference for American goods is related to ease of access and a common language.
But I have wandered too far from OP’s subject matter now. My apologies!
Yep, I am in the same situation as others, importing it to Mexico will be around $1000 USD and honestly at that price range I better get the Ananda for about $800 USD on local Amazon as most HiFiMAN products are at really good local prices.
Zeos just reviewed the Ananda and just makes me want it more… unfortunately I have rent to pay
So I just made a thread several hours ago on my next pair of headphones kinda want an endgame pair of headphones something that is going to last and im still a newbie. I have my dt990s for gaming and I have never heard a planar before but the Ananda, Aeon RT, and lcdx were brought up.
I’m a fanboy so you’ll get my Ananda vote.
I’ve also heard good stuff about the LCDX; so if it were me that’d be my second option. No opinion on Aeon RT.