Originally Posted By: Silverado12
Does this look like a decent bike for the price?
No. This rear suspension design is going to cause severe pedal feedback as the suspension cycles. It will also "inchworm" when you pedal up steep hills in low gears. The high forward pivot was one of the early (90s) designs that was quickly abandoned.
You're on the right track with 29ers, but bikes like everything else you get what you pay for. No way would I buy a no-name bike online not knowing if it will fit. The description says 21" fits 6'1" and up. It's going to be a poor fit for you. At 6/6 you might not be a lightweight, any inexpensive suspension bike you buy is going to wear out and get sloppy pivots in a short time.
Something else to consider, many casual riders want to sit straight up on the saddle with high handlebars like a begging dog. This definitely puts any bumps straight into your back. It's much better to have some forward lean and have some weight on your hands/arms, it takes the strain off the back and is more efficient.
This is a good time to buy a bike in a bike shop, they want to move the 2015s and are willing to deal. Craigslist is a good place to find deals on little used bikes, but you do have to have an idea what you're looking at. Saying Shimano gears means nothing, Shimano makes bike parts for $75 Walmart bikes and $7000 high end custom bikes.
Good luck and keep riding!