I have been riding my hybrid bike for a little over a year now and decide this passed weekend i wanted to try some dirt trails. From what i read about most hybrids before i bought it was that they were acceptable on dirt trails... Well maybe i was on the wrong trail but i quickly realized my bike wasn't made for this. Had a lot of fun but now want a mountain bike for the off road riding. Ill admin im cheap, and will more than likly buy a used bike. This are the few i have been looking at but im still not that familiar with all the components and if they are good or bad.

1) https://albuquerque.craigslist.org/bik/5824147490.html - Trek Mamba

2) https://albuquerque.craigslist.org/bik/5786662951.html - Specialized HardRock Sport

3) https://albuquerque.craigslist.org/bik/5782381722.html - GIANT XTC Should i be worried about all the scratches and scrapes on it ? I understand it happens but not sure if this means the bike has been neglected.

I am fine with doing tune ups or maintenance on a bike but its all the components i don't really know about as to which is good for trail riding and whats not. Let me know what you think of with of the 3 and if there is something i should stay away from.

Thanks !