No multisport function like the 310XT, 300 or 910XT. so you can’t capture the swim/bike/run parts in a single file. I actually quite liked this in my forerunner 305 days…
A big thing for me though is no power meter compatiblity… does that matter to you? only the cycling models or the XT models include this i think.
I’ve always found the DCRainmaker reviews pretty good:
http://www.dcrainmaker.com/2011/04/garmin-forerunner-610-in-depth-review.html