You'll need to compare the two for yourself.

Great values for a full suspension can be had for your price range. In fact Jamis (bike of the year two out of the last three years) has several high quality full suspensions in your price range. Other brands offer similar quality and that price.

To review what "owners" have to say go to www.mtbr.com

Biker Chick hit it right on.

I personally ride a full suspension and, let me assure you, I get out of the saddle and have rock solid glutes. No "SOFA butts" here. Some of my riding friends still hold to the idea the hardtails are lighter and faster but I'd suggest you check out what the pro's are riding. Brian Lopes and the Luna Chicks to name a few.

I've found the control of the bike so much better, I ride longer, harder, and faster. Pedal bob, on full suspension bikes have virtually been eliminated through technology. The increased weight (2 to 3 pounds) of the bike is negligable.

Maybe your local bike shop (LBS) would let you test ride both a hardtail and a full suspension and let you compare.