I really like douglas fir. I find that it is easy to straighten, somewhat durable, and the grain is beautiful. Although, if I run into some good POC that bareshaft upwards of 430-450 grains, I prefer it.
I've got a couple dozen maple shafts from a friend, and I really dont care for them. It takes alot to get them straight. I ended up using heat from the burner on our kitchen stove to straighten them. I also noticed that they tend to hold quite a memory. So if you coax a really crooked shaft into a nice straight arrow, it will tend to want to go back to that crooked state more so than softwoods. You also cannot cut tapers with a hand tapertool.
I bought some white birch shafts last year, and they were OK, but again, you will need to take a lot more time and effort to get them straight compared to POC or doug fir; and they also seem to have more memory than softwoods.
I am playing with some ash shafts now, and I like them so far, but they do require alot of effort to straighten. However, they seem to hold the straightening better than the maple or birch shafts I've tried. I dont like how ash takes a stain however.
So, all in all, unless you are hell-bent on a 700gr. or higher arrow, I think Doug Fir is the way to go.