A great buy! The treadmill arrived within 2 weeks of ordering it. It was easy to put together, and with two of us working on it, it was done within 30 minutes. My husband and I each use it daily to run. It works well at high speeds for average weight people. We couldn't decide between the 3 and the 5. So glad we got the 5. The extra length is really worth it. Fairly easy to figure out, although the elevation doesn't seem to be working. It may be easy to fix, but we wouldn't really use it anyways. The treadmill feels really solid, like a professional gym type. My complaint is that it takes a few seconds for it to start the band moving and a while for it to get up to speed, which can skew the end results. But overall, we love it and was certainly worth the price with free shipping. I would purchase it again any day.
Also we just put the treadmill on an extra piece of carpet in the basement and it stays put just fine. No need for an expensive "special" mat for underneath.
Buy Bowflex Series 5 Treadmill!