Anyone used the cff prowler hi/low push sled?
 

I am looking to get a sled that is like the elite fts prowler. Has anyone tried the cff prowler from christian's fitness factory http://www.christiansfitnessfactory....Push-Pull-Sled (work safe). I wanted to make sure it was actually fairly sturdy and able to be used on grass surfaces. I was also looking at this sled I found on ebay: http://cgi.ebay.com/NEW-DRAGGING-PUS...item2c5268b80b (work safe). Has anyone used either of these sleds.

I was thinking the ebay sled looked very sturdy and should do everything a prowler does.

This sled is made in Pittsburgh, I've talked with the guy, seems well built, good price.

http://pittsburgh.craigslist.org/spo/2012751121.html