Finally, a MTB thread...
I ride a freeride bike (read that as freeride monster)... 6.5" travel in rear, 5" up front... 8" disc brakes all around, weighs around 35lbs, However, I can honestly say that i have ridden almost EVERY frame thats widely available today, and many that arent.
first things first... Anything from chainstore= heavy, cheap (in all senses of the word), limited upgradable, hunks of aluminum/iron... Avoid unless you have NO other options. They will be running absolutely bottom of the line parts all around. Crap hubs, rims, spokes, forks, bars, shifters, derailleurs, seats, seatposts, chains, cranks, pedals, grips, stems, headsets, cables... you name it, the mfr cut corners on it to save money. The people who put the together are untrained, and often do poor jobs. If you check out all the recalls, 90% of them are for store-bikes. Main problem areas= forks, both suspension and rigid.
If you are gonna buy a bike, get it from a LBS (local bike shop). Trust me, theres one nearby. I live in BFN, and theres one 30 mins away in 3 directions... Trek bikes are ok... any model is gonna be Alpha Alum. and have an RST or RochShox low end fork. The fork is going to work OK, but will not have anything adjustable. Big deal... It will have V-brakes, which work great compared to the old cantilevers. It will have 24 or 27 speeds... whatever, dont expect it to shift perfectly forever. It doesnt have the best components, but its gonna work for a long time.
Specialized bikes are great. Their new frames use square->round tubing on the headtube, and are strong as heck... I like them, but they are often in short supply.
Giant bikes ROCK. My first "new" (in the past 5 years) bike was a Giant. Great bike, great company. They have a good lineup, with a lot of features, often for a lot less than you'd expect.
Other brands:
G.Fisher- I'm not a big fan of Genessis Geometry, but some swear by it. Try it out if you can.
Kona- Amazing bikes, with a lot of sizes, but prices are a little higher. If you have a dealer in the area, check them out.
Marin- worth a look... some decent low end bikes.
GT- still making bikes, but quality on the lower price ones have gone WAY down... high end ones are still as good as they were <-not saying much
there are other mfr's... but, NO pacific, no Huffy, umm... no roadmaster, any walmart brand. WHY?
Do you want to entrust your testicles to the sporting goods dept. at WalMart? If you buy a bike there, you are giving them the chance to take those unborn children from you by assembling your bike wrong... as they're not trained.
Riding forever,
SharkyTM
(2001 Kona Stinky-DEE lux)