Sorry for such a delayed response to my own conversation but I have been very busy. I understand biking has it's limits when exercising/burning calories. My regimen will be a combination of biking, walking, treadmill on bad weather days and weights thrown in 3-5 times a week.
As for the bike; From what I'm gathering, it seems like any bike I want that fits me will work. It's more about the proper wheels, right? I know I got on the 925 the other day for a second to get a feel for it and it was awful! I am so ashamed I let this happen. Riding that bike will not work! Anyway, thanks for the info and suggestions. Cheers!