Not sure if this is the right section to ask this question in, but I'm looking for mountain bike suggestions. I'd like to have a mountain bike I can take with me on trips and ride some trails. Most of my extra money right now is going to finishing (ha, never will be finished) my Jeep. Would I be ok with a bike from Walmart? Or do I really need to spend the money on a Trek, Gary Fisher, etc. I'm sure I'll ride this bike at home as well, but I just don't want to spend a bunch of money. Maybe down the road, but not yet. Thanks for your thoughts.