NEW Mountain bike issue???

Well, it's listed as being a 21-speed, which in general terms is fairly outdated. They're easy to tune and a bit more tolerant of running conditions than those with 9 gears at the back - but still a strong whiff of yesterday.

It also has a suntour fork, which is pretty much a low-end product. Not as much as the noname forks on department store bikes, but still something more usually found on hybrids instead of on bikes intended for hard off road riding.

While it's likely to be a lot better than your $100 BLO (bicycle-looking-object), don't expect too much from it. I'd say you need to get (well) above $500 for something that will both hold up well, and keep a smile in your face for serious trail riding. If you feel the need for full sus - don't stop below $1000.

I suggest you head over to www.mtbr.com, and start reading their bike reviews.

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Any other good recommendations for me? I honestly have no idea what's out there.

Since you're a beginner, I highly recommend that you develop a relationship with a local bike shop. You'll need their support and advice. If there is an REI store in your vicinity, they'll do.

I don't know too much about Diamondback lately. Two entry level bikes that I highly recommend, though, are the Specialized Hardrock series and Trek's "Gary Fisher Collection" Tarpon. While the Tarpon and the basic Hardrock will be comparably equipped to the Diamondback, their frames set the standard in this price class for lightness and maneuverability. Both are inexpensive, rugged, and absolutely delightful to ride.