Well I can tell you this much...
I do alot of scalping with my LOCAL & with Offshore...
My Local often HEAVILY over-exagerates the favoirtes, so I usually bet the DOGS with him & the Favorites OFFSHORE...
So far this year I have lost a TON with my LOCAL betting the DOGS & won quite a BIT offshore betting the favorites... Personally I dont really care which side I win more on as long as I come out ahead on my SCALPS however if I am winning more Betting the favorites OFFSHORE than Betting the DOGS with the local, this tells me the books may be taking a hit, as most players will also take favorites over dogs...