Nothing wrong with methodically testing a bunch of apps. I've done it, although not methodically. I just used a new app once in awhile, side by side to compare with a known app.

I keep going back to Strava because it just works. It's reasonably intuitive. Most of my riding friends use it.

If I had no interest in the social media networking aspect of cycling I'd probably stick with Cyclemeter.

I've tried several others, and continue to try new activity apps once in awhile, but none of 'em is better than Strava and some are so opaque and non-intuitive that I wonder why the developer bothered.

Besides my overall averages I usually want to compare how I'm doing on particular segments, ranging from around half-mile fast slight uphill grades to short steep climbs to longer roller coaster routes up to 10 miles. Strava and Cyclemeter help me do that easily. And Cyclemeter includes weather data for that day so I can guesstimate the effects of wind, temperature, etc., over time. Other apps don't do that as well, if at all.

At the moment I'm trying Endomondo just because it interfaces with MyFitnessPal. The only reason I'm trying MFP is to remind me to eat more. Rather than needing to lose weight, I've been running a calorie and protein deficit for more than a month. Happened so gradually I couldn't figure out why I was exhausted and losing fitness rather than gaining. By tallying everything I eat I realized that eating until I felt satisfied wasn't good enough for my activity level.

But MyFitnessPal didn't interface nicely with my preferred activity apps to factor in my calories burned. So I had to use one of their proprietary apps like Endomondo to avoid having to manually calculate calories burned. But I don't care for the Endomondo app and won't continue using it after I've got my diet back on track.