Hi and welcome to AG!!! Being in NH, I'm well aware of that product line and the company that distributes them (as mentioned above). The company that distributes those products and thousands of others, (including 3m & Megs) has been a family business for nearly 100 years and are wonderful folks to talk with.
However, with that said, I want to point out some basics of the AGO Forum:
http://www.autogeekonline.net/forum/introduce-yourself/24039-forum-rules.html
1. The AutogeekOnline discussion forum is exclusively sponsored by Autogeek.com. Product discussion should be limited to products that are available from Autogeek.com and PBMA's family of websites.
With all that said, My buddy owns a detail shop in northern MA and uses that distributor and those products. He turns 40 to 60 cars a week in a recon production, has a staff of 4 - 6 guys at any given time, works Mon-Sat 7:30am to 7:30pm, and has done it for 25 years. He does recon of commercial vehicles, livery vehicles and privately owned vehicles. For someone like him, turning that amount volume per week requires his purchase to be 1.) cost effective 2.) in 100 Gal drums. Thus, he uses that distributor for all their bulk products.
IMO, If you've found AG, it's because you're on the OCD side of things. All I can say is all my products come from AGO, and I invest heavily in the Pinnacle & McKee's product line and have never been let down. I watch my stock levels carefully and wait for the sales (which are more frequent than ever!). I buy mostly bulk (128 oz) of everything and take advantage of the BOGO's and two packs (i.e. McKee's HD APC x2 128oz pricing).
I have done side by side on a few items, such as the iron decontamination products, and IMO, CarPro Iron-X comes out on top every time. I am eager to try McKee's Iron product when it is released.
I hope this helps!