There has been a lot of discussion about need for post cure and "tg" temperatures. I've done some research on this and come to the conclusion that, while all epoxy systems will benefit from a post cure, its not essential. This is evidenced by the hundreds of canards out there which were not post cured. The MGS stuff has a higher tg at room temperature cure than EZ-Poxy, and goes much higher still with a post cure. Add to this that its entirely odor free and is supposed to be low in allergy causing ingredients. (See above comments below under allergy). The need for post cure or otherwise is not, in my understanding, a valid reason for choosing one epoxy over another. MGS have been very helpful in answering my questions. (later I asked MGS by email for advise about a yellowish batch of resin. They took a week to respond, then sent me 14 pages of german language technical text to my voice number. They put the fax on repeat, so the only way to get them off the line was to hook up the fax and bring my company to a standstill for 1/2 hour. I was not pleased.)
I ordered the recommended five gallons for Chapters 4 - 7. At the end of Chap 7 I had 1 1/2 gallons left. My initial order lasted until half way through chapter 9. I ordered 2 more gallons and this ran out at the end of chapter 14. I also noticed that my bulkheads are 10% lighter than the average in Marc's table. Either the high Florida temperatures, or the low viscosity MGS resin are helping me build light. The savings in resin also bring the slightly higher price of MGS into line with the other stuff.
There seems to be something of a battle going on between MGS and "the old standard". There are arguments on both sides. This was well documented in various email correspondence earlier this year.
My subjective report: Since starting my project I have been visited by two builders who have used other epoxy systems extensively. Both were amazed at the wetting out capabilities of MGS, the lack of odor and the apparant ease of use. One, an A&P formally trained in composite construction, was dumbfounded when I proceeded to wet out three plys of BID at once in about 30 seconds. He said that this would have been unthinkable using the "brown stuff". He had never seen epoxy of the consistancy I was using. He checked the resulting part after cure and was much impressed with the look of the layup, saying that the lack of air bubbles was very impressive. For me this was no big deal and certainly not a skill issue. When working on large layups at his shop it was considered "essential" for one person to be squeeging, another pouring and another mixing. When I calmly took a cigarette break and a quick swim between plys he thought I'd gone mad!
He said that large air bubbles appear "by themselves" in their layups, perhaps because the epoxy is much closer to a gel. They have to work very hard to get rid of them, and always have a few left. He watched me lightly brush the epoxy on to a single first ply and achieve full wet out as I went along. He is used to the pour and squeege method. Brushing simply would not work, he says.