Yeah, last I heard Stages is still claiming that the issue lies with Garmin and that the 910 xt uses 4 channel ANT+ connectivity. IOW, even though every other ANT+ power meter has no trouble connecting with the 910xt, Stages is still blaming Garmin as the problem, and as far as I know are not making any changes to their product to increase their ANT+ signal strength. Instead, their solution is for you to upgrade to a better Garmin. If you're using a 910xt as your primary bike computer, I would completely avoid Stages until they make an effort to address this issue on their end...because I can guarantee you that Garmin isn't going to do anything to improve the 910 watch you already bought from them...which works with everything else ANT+ in the world.
From this link on Stages website directly addressing the 910 issue.
Data connectivity problems caused by pairing multiple sensors, manifesting as missing data/dropped data both on screen and evident in post ride download.
Cause: device uses older 4-channel ANT+ chip stack, weaker connectivity to paired sensors.
Effect: frequent drops and missing data with more than two external sensor parings; zero reset failure if HR strap is paired and not present.
Solution: recommended total number of ANT+ sensor parings: Two (2) for Garmin Forerunner 910XT; if more sensors required, upgrade Garmin device to newer model with 8-channel ANT+ chip: Edge 510, 810, 1000
Further recommendations: be aware of HR pairing and Zero Reset interaction (see Zero Reset comments).
Prone to RF interference and data drops.
Cause: device uses older 4-channel ANT+ chip stack, weaker connectivity to paired sensors. Sub-optimal chip orientation causes drops when fully extended in aero bars
Effect: data drops in signal heavy environs, be aware of cause and effect.
Solution: upgrade to Garmin device with 8-channel ANT+ chip: Garmin Edge 510, 810, 1000.
Further recommendations: keep Forerunner firmware up-to-date; check monthly
Edited by Jason N 2015-01-21 7:07 PM