Thinking about purchasing one for track days. I plan on doing only about 7 track days a year and do want to improve on my driving skills. Other units out there that you all may recommend? Thanks!

 

My experience w GTech about a year ago: This deal is accelerometer-driven, and, as they are not NASA quality (understandably), are very touchy i.e. sensitive to placement and adjustment. Data was, ultimately, unreliable because it was so erratic.Set-up the same way, same location, worked well some days, not others. Others I've talked to have similar experiences. Car and Driver did a piece on several devices some time ago, and seemed to reach similar conclusions.
All of this is moot now, as P-Box simply blows the competition into the weeds. GPS-engine driven, simple, flexible, reliable, expandable, cheap. Call Switzer. Buy one. Be happy.

 

P.S. Much as I like P-Box, it ain't the best-looking thing (very '60s radar detector), and the display could be better. But I'm picking at nits. The thing works as advertised.