Smaller airfields usually mean smaller training organistions. These can have the advantage of a more personal approach to the training. There can be considerable years of experience getting around these smaller airfields and you are likely to strike the CFI for the better part of the training, as opposed to the 300hr grade three with limited information to impart.
The Smaller airfield however doesn't provide you with a large number of Pilot wannabes to crack cans with. These are the guys and gals you will be working alongside in the future. Not a bad idea to get to know 'em now.