For law in PA - would you go with Drexel over Nova or Temple if it was cheaper???
I don't live in Philly, so I can't really speak as to each school's reputation/hiring stats/alumni network, etc.
If I were just to guess, I'd say that they're all pretty similar. Temple and Villanova have been around longer, so maybe they have a more established reputation, but is it worth the cost? I doubt it. Personally, I'd just go with the cheapest option.