Garmin 520 vs Garmin 130

[MagicHour]

FYI still a couple nits with my Edge 130, namely:
Battery life - with 3-sensors, livetrack, GPS glonass, no routing I get ~<10hrs. The 15hrs is a bit of a fallacy promised by Garmin would be if you ran the device with virtually no features or sensors. Further although I've only done a handful of cold-weather rides this season there have been reports of diminished battery life in the cold, which may or may not be related to a recent FW release-still to be determined.

Altimeter altimeter is all over the place, I live in NYC basically at sea-level, and sometimes the Edge 130 will give goofy starting elev. like -200ft . It kinda rights itself out over the course of a ride, but is still an annoying bug. They've added a manual calibration but there are still issues.

I do really like the tiny size and features (if they all work) of the Edge 130, but sometimes wishing I ponied up a little more for the 520 plus, which seems to be more stable in the above areas, and has more advanced features.

Edit: Not sure what your intended trainer use is, but if you want to use in conjunction and control a Smart trainer you need to step up to the 520 series. The 130 is very basic in it's training features much beyond simply displaying sensor data fields.