Recently bought the GolfLogix...have used it twice. I bought this unit for a few reasons:
1-Waterproof
2-Made by Garmin. I currently use 2 other Garmin GPS units almost daily at work...no problems.
3-Simplicity. I have found it very easy to use. Just pull up to where your about to hit...look at the screen...done.
4-Distance of last shot. Now I KNOW how far my shots are for each club.
5-I googled the words "golf GPS & forum". I'm not dissing the Sky Caddy, but wow...there are some really bent guys out there mad at Sky Caddy. The main issue seemed to be service related.
Bought mine new off e-bay...269.00 plus the year fee.
I also use a Bushnell rangefinder on my job. It cost about 240.00 and works great...but not quick. I have to hold it very still for long distances 200 yds+ and there better be something flat to bounce off or it doesn't work.