The 2610 has all the 'externals' (power/Speaker output) in one connector, rather than separates ones as with the SPIII. I have switched to the 2610, and am very pleased with it. I purchased an extra 12v/audio cable, took it apart, and hardwired it into my SUV. I'll save the intact cable for use in my wife's car whenever we take it on a trip. Am waiting to see what Kennedy puts together to decide if I will use that product on the Wing, or wire up something myself. Am still surveying the field to see what sort of mounts people put together to decide how to mount the 2610 onto my Wing. I used a RAM mount with the SP III, but am not for sure that is how I will mount the 2610. I want something that allows me to easily remove it for security, but will hold it safely while I ride, and still looks good either with the GPS mounted or not. :idea: