Hello all! I am a novice MTBer with maybe 20 rides under my belt. I have been riding a converted comfort bike so far but I am wanting to move up to a little better bike. My LBS has a 2007 Giant Yukon that he will sell me for $400. That is about what I currently have budgeted to spend. It has decent components (Deore front and rear, 8 speed Rapidfire shifters, Hayes mechanical disc brakes). I know very little about the bike in terms of its reputation or performance. I ride trails in Indiana, nothing extreme and no real jumps. I am around 200 pounds. Is this a decent bike for the $ ?