I'd stick with John. He's on here and been around for a while.
http://thatpinballplace.com/eproms/index.htm
Quoted from KyleCat:Anyone ever use hobbyroms.com to get WPC roms? I am looking to get 1.3X and get the anti ghosting code compiled in there too. Curious if this guy is trust worthy or not. From what it looks like on other pin forums they swear by him.