I use bavarian machine specialties exclusively. they are not the cheapest but they do it right. i know john, the shop manager, personally, he is very easy to work with and his staff is really good. in fact just today i dropped off my zhp for some work...Dr Vanos kit, VCG and spark plugs. wouldn't hesitate to recommend them to anyone.
btw...ZHP vert in houston? nice. got any pics? what part of Houston are you in?