Thanks for all the advices (keep them coming)!!
Phony Stark, how would you rate the comfort and adjustability for the Flites? I know the Burtons are renowned for adjustments, and Unions on the other hand are more on the simplified side?
Comfort? Burton Lexa, has the super strap, and it's more comfortable than Union's Flite strap, if you're talking about last year's strap or, to my knowledge, this year's which doesn't have Union's asym strap. Not to say Union's are uncomfortable, my DLX straps feel just fine for me. It's just that burton's strap will be more comfortable than what goes on the flite.
The adjustability of the flites isn't really any different from your trilogies. I like the fact I can adjust the heelcup to center my boot over the binding.
Burton on the other hand, is more adjustable and yeah I was stoked at the adjustablity of when I first got mine, but for me the stoke kind of wore off when I got on the mountain. While you can rotate the highbacks MUCH easier and micro adjust to the exact orientation of the binding to the board, I have found that it didn't make much of a difference. I was able to adjust the straps up and down and that was helpful as well, but not something I missed when I went back to my Unions.
The things that matter the most to me, centering my boot in the binding and adjusting forward lean quickly on the mountain, Union does better.
Quick Summary if TLDNR
Burton's ankle strap is more comfortable and Burton is more adjustable overall.
Union's binding is more adjustable for things that actually matter to me on the mountain like centering your binding and adjusting your forward lean.