Recommend only a Garmin & probably the 60CSx is the one to go for.
But I've been using the Map 76S for 4 yrs now & it's been ok for me, except the usual Garmin power supply problems.
The antennae was weak on the 76S & the 60CSX is vasty superior, however I see that there is now a 76CSX out & I will probably go for that one next year.
The reason I like the 76 most is because it has the "biggest screen" & would appear to be quite durable in the rough & tumble & wet. The 76 is a marine GPS. Ive got 40,000 kms up on the curent one & had 70,000 kms up on the last one. The screen faded very badly on the last one, but I suspect that would happen with any GPS that sits on my bike for weeks on end in the sun & rain.
I also recommend Eagle GPS in Chiang Mai for excellent service & info.
http://www.eaglegps.co.th/