I always thought the way the way to buy a bike when buying complete was to buy the bike with the best frame, as when the components inevitably wear out & need to be replaced they can be upgraded….
“Best” is a very subjective word to use I mountain biking… The “best” frame to one person may be totally unsuitable to another! The 456 isn’t going to win the lightweight xc race bike award, but as a fun all round bike that can be ridden as hard and fast as most full suspension bikes most of the time… It’s up there, and certainly is possibly the best for VFM…
If the 456 is a no go for being overweight, check out a Genesis Altitude… They do a complete bike that comes in under £1k, deore/slx, recons etc… Nice bike for sure, but not quite the bargain that the 456 is with fox forks etc…