[mkgmap-dev] Garmin Car SatNav recommendations

Hi all, Returning to the world of playing with mkgmap after a while doing other things, and in need of a new in-car satnav, I thought it might be fun to combine the two. So, I thought I might ask the list for a recommendation of which Garmin satnav to buy. The primary function here is to be sure that when I encounter routing errors, it's the data at fault and not the device, so I can go fix the problem. So, what devices have people had good experiences with? Many thanks, Greg