UltraEdit is a great editor but, as you said, it's Windows only. You can use the ftp save as but that is still not that great.

I prefer vi since it is just about on every Unix box that I've ever used and, once you get used to it, navigation and feature use is only a couple of keystokes away. A couple of features that are very handy are bookmarks, copy and paste buffers, launching a program and automatically reading its output into your text, lauching a program using your text as input. These will become second nature and you'll get going pretty fast. I kind of wish UltraEdit could switch on a vi mode once in awhile.

Thomas