I'm always dubious of those comparison charts, especially when they say things like the Fenix II isn't compatible with third party ANT+ power meters (doesn't Dammit use theirs with a PowerTap hub?)
If I was buying now (for adventures into slvlss) it'd be the 920xt but I won't make any purchase for at least 6 months and everything could change in that time.
I'm always dubious of those comparison charts, especially when they say things like the Fenix II isn't compatible with third party ANT+ power meters (doesn't Dammit use theirs with a PowerTap hub?)
If I was buying now (for adventures into slvlss) it'd be the 920xt but I won't make any purchase for at least 6 months and everything could change in that time.