CLJ is a big base as well as OTP. I would avoid OTP since its a mess there honestly...CLJ seems to be nice, nice town and nice collegues. Dont know about the roster, but normally its 6-4 or 6-1-6-7 or random with 7 days OFF per month.
SKP has 4 aircrafts and is a very nice pearl in the southern europe, cheep and nice food and people, take care of the drivers, it can be crazy once in a while.