Hey, I have been biking all my life (mountain/trails when i was younger, now BMX) and am now interested in getting involved in mountain biking again. I want to get an alright mountain bike that costs under $125 (I am broke and in school, this will take me a while to save to).

Here are two bikes that look like good deals to me:
http://www.walmart.com/catalog/produ...uct_id=2513008
http://www.walmart.com/catalog/produ...uct_id=1647017

I am also completly open to any other bikes from other places, but these two looked like good deals to me. Any suggestions on which bike I should get?