I think I've had the PRG-80L for around 8-10 months. It's my only watch, worn 24/7. Previously I owned the PAW-1300 for about a year. I got tired of looking at it, too plain.
So far the PRG-80L has been a workhorse. Swimming, extreme hot, cold, impacts, the usual, and it has emerged as you see in the pic.
In the beginning I used the baro graph quite a bit, but over time the most important features for me have turned out to be the alti, CDT, 5 alarms, and stopwatch. Yes, there are limits on the CDT and stopwatch, but I rarely time any long events so this has not been an issue.
Great huge display, current time visible in all modes.
I use the alti all the time to record my cycling sessions. I find it to be accurate when compared to elevation gains of the various online services.
Super minor quibble is the lack of day/date on main display. I just press the adjust button to see the day, no biggie.
Impressed/surprised by the strap. Much more comfortable than a standard casio rubber strap. It dries out quickly, forms to the wrist nicely and is very comfortable. It's holding up well.
Though this is a large watch, sits high on the wrist, I hardly notice it. Very lightweight.
Much nicer looking than the PAW-1300 I think, and I really enjoy looking at it every day.
Queen6 has reviewed this model extensively and has lots of good things to say about its alti accuracy.