The Dunu Talos puts many of the IEMs under $300 I have heard to shame in terms of both tuning and technicalities. I do think the optional BAs are limited to niche applications, and I would love to see a streamlined, planar-magnetic-only version of the Talos for a modestly reduced price. Even so, the Talos is easily worth its retail price and is a no-brainer purchase on sale.
My full review is available here on HiFiGuides and on my blog.