Bossnut
My issue with the Rockrider would be that it’s a bit of an unknown, it’s a mailorder bike and whilst I don’t sit here geeking away all day, I’ve never heard of it until know – what’s the geometry like? what’s the sizing like?
I’ve just had a quick look at the first couple of reviews – the reviewers who like it, seem pretty new to it all, the reviewers who are less favourable seem a bit more knowledgeable – a lack of rebound adjustment on the shock is an killer, the the bare minimum for shock adjustment – it could ride like a water bed or be throwing you off on the top at the first sign of a lip.
Personally, I’d go Bossnut every time, it’s a bike that’s been reviewed by seemingly every MTB media outlet in the country and they all love it, Go Outdoors haven proven to be very good at after-sales (because the V1 had some issues) and as above, it’s a bike you could easily run for years before you outgrew it because the frame geometry is well sorted it’s a great platform for upgrading – I suspect the rockrider would find it’s limits a lot sooner.