Also, I read it at another post that the Rockhopper weighs at around 30lbs. Is this correct? (also curious, how come most sites don't specify bike weights?? Is there something that I'm missing??)

The Hummer weighs at 29lbs. so it would seem comparable. On the display it claims that it has "disc break mount".

As you can tell, I'm a real newbie My last bike was a $150 cheapo and I'm looking to upgrade to an average beginner's model. I'm also gonna go check out my LBS, but was just wondering if anyone has any inputs on this Hummer old model on sale. Thanks!