I've always used Connect. People in here act like it's the red headed stepchild of the training log world, but I've never found it very lacking. Tells me my avg and normalized power from a ride, has all the charts and ability to overlay them or look at one in isolation, there's a power curve overall and for each ride, and training load based on HR. The performance management chart (CTL, ATL) is the one thing that's really missing. There are even segments, not very competitive, but I've always found the lap button more useful.
I'm going to continue using Strava's global heat map to find rides away from home, and I'll continue uploading rides I do that will affect the map. Otherwise, I've never really seen the point.