I recently purchased a Microtech UTX-85 in green and bronze. It appears to be exceptionally well-made, but I am not sure that I will keep it as it is noisier and less comfortable than a lot of other knives I own, and it is more difficult to open and close than, for example, my Benchmade 527. In general, I am not fond of assisted-opening, though I do like the double-action feature of the OTF knives, but the action is intentionally difficult (a built-in safety feature in lieu of a lock) so it is not as easy to operate as many manual folders.
If I were to keep it, I'd need to find a spare troodon clip from someone, or just a shorter clip, as I am also not a fan of the long clip included with these currently.
I would recommend the UTX-85 over an Ultratech based on size. I would have preferred a Troodon but could not find one in stock for a price I was willing to pay. The ultratech is noticeably larger.
Keep in mind the Microtech makes these in batches, so yo may need to wait to find the configuration you want "in stock". And do please be sure it is alright for you to even own, much more carry, before you purchase. Laws can be fairly restrictive regarding automatic knives...