What sort of MTB?

Without sounding like a d**k, if there’s one thing I’ve learnt about spending money, particularly on bikes, it’s that i’m better off spending it on the right one and whilst i won’t be going out and buying an s-works or the like, I’d much rather spend a bit more first time round than be thinking i want somthing different in a years time.

Either way i suppose i’d be looking to get 105 equivalent (is that deore???) Probably rather get a good aluminium frame than carbon