Love my Garmin 500. I picked it up for touring because, with a little trickery, you can get it to display a track (not a map, but good enough). Comes with two mounts, so I just toss it between bikes. Speed/cadence sensor stays mounted on the roadie because it’s usually on the trainer. GPS only is good enough for logging my rides on the fix, but if I run across a deal on a speed/cadence sensor when I’ve got some extra scratch I’ll add one there too…