I've used a few Fitbit's.. and I'm now using the Zip, the cheapest one they make. Got it brand new on eBay for like $40. I dont need all the stats the advanced ones give you, I just like the step count and distance. But it's attached to me, cant go anywhere without it. Comparing activity against friends and co-workers drives me and keeps me active. You can really tell the difference at the end of a day you took 15,000 steps vs a day you did 5,000.