Whats The Best Mountain Bike For £300?

Don't even think about buying a full sus bike for £300 - you'll hardly get a decent rear shock for the moeny, let alone a decent bike! As for hardtails in that price range, you won't go wrong with a Specialized Hardrock. Its a great entry level bike, and for £300 you get the most basic model (well, there is a cheaper one with a rigid fork...) and it will do anything you want a bike to do for that price. Best thing to do is get to a decent bike shop (not Halfords!) and try a couple of bikes you like the look of. Tell them what you need it for, and they'll also be able to advise you.

Can't tell you about the 2 bikes you mentioned, but your 300 Quid question... What MTB said this about the Mongoose Tyaz Elite 2007 (280 Quid at www.wiggle.co.uk): "Out of all four test bikes (Giant Yukon - Decathlon Rockrider 6.3 - Revolution Cuillin Disc), the Tyax Elite feels most at home on man-made singletrack, and this is due to its fork. With the fork not rebounding over every ripple, you can decend faster and more sure-footedly. It even climbs easier because the fork tracks bobbly surfaces better. And on technical sections the very wide bar and well-balanced feel make for great slow-speed stability. Brakes and gears are only slightly more low-rent than its rivals, and the differences don't add up to anything you can feel through the seat of your pants. In fact, because it handles better on technical climbs, it feels as if its gears had a 34T bottom cog instead of a 32. The Kenda Komodo tyres are reasonable 'all condition' treads, a bit like a budget Fire XC Pro."

i have bought a few bikes in that price range and the one that i liked the most was a gt avalanche 2.0 . if i was you i would try and get a second hand bike for £300. that way you are really buying a second hand £500 or maybe £600 bike. it will have better parts and even though it has been used should be a better value bike