the answer to OP
I would actually ask "Trail bike or All Mountain bike?"
most of the bikes people have suggested in their replies have been 5" travel (5 x 5) trail bikes
I would class all-mountain as 6" travel (6 x 6) typically with a 67 degree head angle and wider / tougher rims to take bigger tires, than you'd normally use on a trail bike
the biggest selling suspension category in the UK is the "trail" bike, simply because it suits most riders want / need for the UK!
personally? I ride a Devinci Hectik (6 x 6) which is just over 30lb, and with a Fox 36 Talas on the front, and DHX 5 Air with pro-pedal switch on the rear, seems to go up, along and down very rapidly…
when I ride trails, I run the Pro-Pedal 'on' and the fork on 130mm travel which certainly keeps the suspension and geometry lively
I've taken it to Cwm Carn for the uplift (DH) day, and just switched the tires and installed a shorter (50mm) stem and it was 100% at home
since I only have the one bike, and like to go quick on the DHs, and jump / drop off things, I would not trust myself on a trail bike