OK, here is my question. I am getting ready to order chemicals to make some vitamin c developer per Pat Gainers' article in the march/april issue of Photo techniques. In the article, he first outlines a developer made with vitamin c and phenodine in anti freeze, used as stock, and then mixed with an activator solution prior to use. He also describes P-C-TEA, using phenodine and ascorbic acid in Triethanolamine, used as a single solution. How different are the characteristics between the two? Any great advantage to using one over the other? This will be for shooting 35mm and 120 hp5+ if that makes a difference.