i wouldn't be subject to their particularly anal ideas about "rust on rims" or "paint scratched" etc.
There is definitely some upside there. I'm going through ISP transition next year and if I could avoid paying stupid amounts of money to clean up all those nicks they're going to harp on for reapproval of vehicles, that would be great. I'm going to look over the contract again. But I'm pretty sure there isn't anything in there that spells out specific approved vendors for rentals