Thanks, you should sticky a link to it here once it's worth publishing. I noticed this site mentions something too, but I couldn't find the thing he's talking about...
http://lazygosu.org/Seems like Ruby is a bit flexible for most IDE's to bother with code completion. I did lots of poking around and eventually settled on Aptana. While the hotkeys are taking some getting used to, it's still pretty impressive so far. I think I can remap hotkeys somehow too.