I'm looking to purchase another vintage issued G-1, and I'd guidance on which brands to look for and those to avoid. I know that Irwin B. Foster and Martin Lane are considered better brands, but what about Imperial Leather and Star Sportswear? I have five issued G-1's in my collection (a '69 Martin Lane, '70 and '84 Brill Bros., an early '80's Ralph Edwards and an early '80's Cooper) and damned if I can tell much difference in the construction and workmanship, aside from some being goatskin and some cowhide. I'd love to have an early '60's C series jacket in my collection, but with my budget I'll probably be purchasing a late-'60's or 1970's D or E series. Any guidance on brands to pass on would be appreciated!