[THEFERMANATOR]

I only have an old GARMIN GPSMAP76 hand-held, it's black and white but works great. Another thing to consider is product support. You hope you never need it, but I can vouch for GARMIN being A+++ in the support department. And everybody I've known with GARMIN has had great support and response from them. LOWRANCE also makes some very nice equipment as well. My dad who was a commercial guy for awhile swor by Si-tex though(FLORIDA company). There a little pricey, but make some of the best equipment out there for repeatable accuracy.

http://www.si-tex.com/