Since I started with SparkPeople first and have a lot of foods entered in already, I use the SparkPeople food tracker and just sync the total calories with BodyMedia. I think it's mostly a matter of preference, whether you like tracker here or there better. I've stuck with SP just because it's the easiest for me between the online version and the phone app.
I don't believe you can push the data from BodyMedia to SparkPeople, at least I haven't seen any way to do that. Initially I had a BodyBugg and tried entering foods both places; not worth it to me, and you're right, the calorie values do come out differently from food tracker to food tracker. I try to choose carefully here as many foods are entered by members and may or may not have correct information.
Denise (Half Fanatic #1279) - PDT Time Zone
"The greatest pleasure in life is doing what people say you cannot do."
- William Bagshot
Body Bugg & Body Media GoWear Fit Co-Leader
|84 Maintenance Weeks