"I dont know what your capable of throwing at a bike, but a decent hardtail is perfect for trail centres or "big" mountain days. You could get some sort of cotic built up for about £1500, then you can spend the rest of the money on something fun (not bits of metal and plastic)"
"no way would I go from a Rockhopper to a £3.5K bike without having ridden a few. Each to their own!"
"Just get one £2k bike and spend the rest going to great places to ride. I can recommned Moab, Utah."
"£3.5k on a bike is a waste of money."
"I personally think that the law of diminishing returns comes in heavily past about £2000-£2500"
'Nuff said. Wise words chaps. +1 to all y'all.