Thanks, I think I will definitely be look for a 28mm series E, after reading this they seem just as good as the AI/AIS lenses, and are much more affordable!
Also, a question to everyone, what kind of camera bags do you use? I have looked at Domke and Billingham Hadley, but they are both very expensive. I love the style of the bags but they are just very expensive.
Depending on where I shoot I use a beat up bag that doesn't look like a camera bag.A good bag is worth the expense.