The 500D trainer I was looking at has 5 levels of resistance as well. My thing is, I'd like to order it and not have to deal with searching around for deals. I work 16 hours a day (the life of a full time worker in college, love it) so I'd rather just hit buy and use it in between jobs when it gets here.

I'm not looking for something top notch. Just something that won't break on me if I decide to use it more than 2 days in a row.