Here's one persons experience with an early Lezyne and as posted on RoadBikeReview

"I have a Lezyne Super GPS (first Generation) that I bought last year. I was kind of in the same situation as the OP, needed a new computer but didn't really want to spend a lot. So it's functions/features and price appealed to me, plus I like all the other Lezyne stuff I have. But I would categorize the first generation Super GPS as just ok, have not used the new one yet so I don't know if it is any different. I also have a Wahoo RFLCT+ and in my opinion it is a better unit. The reason I needed another computer is I started doing Triathlons and phones aren't/weren't allowed on the course and since the RFLCT uses you smart phone as the brains I wasn't able to use it.

My issues with the Lezyne are/were, accuracy issues. I don't think those issues were with the GPS function as much as I think the computer lets the Speed/Cadence sensor over ride the GPS readings and that's where the inaccuracy happens. Once the ride has been uploaded to Strava the distance gets corrected by Strava, so that's what makes me think it's not the GPS sensors. I have been in contact with Lezyne's tech support, (which is almost nonexistent) a few times and their solution for any problem is do a factory reset which I have found can cause more issues. There have been a few times were I have had to do the reset multiple times just to get the unit to function. Once it is reset you then have to use the cumbersome menu system on the computer to set everything back up. I have found a "work around" for the accuracy issues and that is tell the GPS my tire size is much different than it is.

Which brings me to my next issue, I can't keep it connected to my iPhone so the incoming messages function doesn't work. That part is fine as I don't usually like that feature anyway but part of the iPhone connection is the upload to Strava and since I don't trust the finished ride report the computer gives me, (because of the previous inaccuracies), I like to upload it to Strava when done.

The last thing that bugs me is there is no way to have multiple bike profiles. So if you want 1 computer to use between different bikes the Lezyne's not for you.

I started to second guess my purchase of the Lezyne shortly after I got it, I should have just gone for my first choice of the Wahoo Element. I have had great results with my RFLCT+ and any issues I did have were acknowledged right away by Wahoo's Tech Support. There were a couple of times they even said we are working on the fix but it is not done yet so do this... as a temporary work around.

Now I have not tried the new Lezyne computers so some of the issues may have been fixed but don't expect much help from them if you have issues."