All of the other sections are for specific types of bikes and thats my problem. I don't know what type of bike I should get.

I currently own a Trek 4100 and am looking to upgrade.

I basically am using it for traveling to and from class and other activities as well as exercise (daily). I generally travel on the road only although on very rare occasions I'll be on a sidewalk or a small dirt path (generally flattened dirt, not 'off road' per se.

Another important note is that I am about 300lbs and this definately needs to be taken into account because the bike needs to be sturdy.

Finally price is an issue...I would like to keep this bike under 1000 but above 500 (lower than 500 is fine, but I would like a decent quality bike).

If anybody has any suggestions for a type (or model) of bike that I should be looking at then please let me know. It will be very appreciated.

P.S. I was looking at a Gary Fisher Mullet...what is everyone's thoughts on that particular bike as well?