I’ve had a £3500 trek carbon hardtail in the past and recently bought the trek 8500 (which was very cleverly suggested by rolfharris).
As mad as it sounds i MUCH prefer the ride of the new alu hardtail…the 2lbs weight difference is fairly un-noticable and the new XT just feels awesome.
Yes the carbon one was a little better come race day but any other ride it would just kill your back and felt mega skittish, the new trek 8500 feels totally dependable, fairly comfy and still VERY quick. I would deffinitely go for the alu hardtail with better kit if i were in your position…it will be a lot lighter than a £1500 carbon hardtail which are suprisingly heavey.
Hope this helps