Comments about Garmin 310XT w/o HR Strap Monitors:
awesome!!! used it for the first time today. easy to setup. have not installed the bike sensor yet. the tracking features on garmin connect are HUGE. the ant+ sync works great and the details stats are fantastic. It lets me go wherever I want know without a designated path to get bored with. triathletes dream! little larger than my ironman watch of course but you sacrifice for the flexibility and data this provides.