Nitrous plumbing A1A...??..

I thought you didn't like internett gurus lol, jk, seriously order them up and take them to a few local speed shops and get some opinions. There are a few performance shops that will give you an honest unbiased opinion and deal with nitrous. Best case is you discovered a great deal to be passed on to others and worst case you send them back. I'm guessing most guys have never even laid eyes on them as they just buy a kit or used name brand plates so really you won't know until you have them in you're hands.
Got any recommendations on speed shops that deal with the stuff? The only thing I noticed locally is the tuner people using the stuff and a lot of that is dry systems..