I have worked at Peach Bottom, TMI, Limerick, LaSalle, Dresden and Clinton and they were all different. There is no valid cross-comparison for the contract technician. I was treated like a pariah at one plant and like part of the family at a couple of the others. The working conditions (for me, anyway) ranged from excellent to dismal. At one plant the house techs would not talk to you if you were a contractor and at one they were all giving me email addresses and telling me to keep in touch... and those plants were only a couple of hours apart.
Like the carney says -- "Ya pays yer money and ya takes yer chances."