I have a 2010 bighit 2, I cant fault it riding DH wise for the money, but over a year I’ve gradually changed everything on it apart from the wheels. I think they’ve now changed the chainguide which was my only proper gripe, it will go across fireroads OK but I wouldnt want to pedal it up many hills, but it was do-able with original gearing, but would need a longer seatpost.
Only things that I wanted change from from the start were the OEM chainguide (rubbish) and the cheapo pedals.
Bearings got rough quick (no grease) and the smaller FSR ones were seized after 6 months, £45 for MAX replacements for the whole lot from BETD.
Just got a 2nd hand DHX shock for it, but not built back up yet after bearings replacement. LOCO tuned the original Van R to stop it wallowing in corners, worked a treat then.