If all you want is something to track and record your ride, then most any will do. If you are wanting to use those Garmin sensors that are on the bike already then you probably need something that will handle Ant+. Don't know if it's true now, but some of the lower cost Garmin GPS cyclometers and watches won't be able to use some types of sensors. IE, cadence or wheel sensors. But it's been quite awhile since I've looked at the lower models to see what they will and won't do.
Out of the many Garmin devices I have, only one has ever quit. It was a already old and out of date chart plotter when it sank with my boat during Hurricane Katrina and was under water for two weeks till we raised the boat. However it didn't quit immediately, it continued to work for six year afterwards.