I'm with LAX888. If you're flying to CUZ in the rainy season, fly LAN - they are the only planes that can get in when CUZ is fogged in and even then you can expect delays but they seem to find a way in eventually. I would only fly another airline outside of the rainy season when there is less chance of weather issues at CUZ
I flew AV last October and spent 14 hours trying to get from LIM-CUZ, most of that time was on the plane. Had to return to LIM in the evening, get rebooked on a flight the next day, then get transported to a hotel which as you can imagine, took forever and a day.
Return flight to LIM was great - on time, no weather issues and a comfortable seat.