There is a difference between the forerunner and the foretrex. unfortunately i found out the hard way. i bought a forerunner off of ebay because the seller thought they were the same thing! i got my money back but the difference is the forerunner doesn't have kts as a unit of measure. i don't think they have a timer either. in my opinion the the foretrex 201 (rechargeable battery) is the best sailing gps out there. that takes price into consideration of course. the velocitek puck looks good but has a big price tag. you really have to consider losing this thing. I've tried all sorts of different methods of using it. everything from tying it to the boom, wearing it as a watch, attaching it to my crew, etc. no matter what you do you have a pretty good chance of losing it in a spill (i have lots). if you drop 300-400 for a puck then you should have enough disposable income to absorb it. most catsailors are how do you say, "thrifty" sailors. SO, if you like jonesing over your current VMG or just get excited knowing that bending your aft leg gets you .1 kts faster then get a foretrex 201. surf ebay waiting for a $65 deal and collect a couple of them so when you go jungle gybing and catch your gps on a side stay(adios) you don't feel so much remorse!!! cheers!!!!