I bought a couple of wands and tips from them, they seem to be ok.
As for the sealer I buy pure BlackMac from TJ pounder, that is ready to spray. It am very very happy with the sealer so for.
Protect adds stuff to their BlackMac, what they sell is called cut-back.
I think the guy from Protect post on this fourm. Anyway I asked why do they add things to thier Blackmac but he never replied to me yet.
I am new to this sealing as well so I would really like to know the differance.
Also before you buy a system check out marathon equipment I have heard great things about their systems.