But did you want him to compare E with Textmate? His point was that he switched to a Mac and wanted to compare what's out there for RoR on Mac: in his case, Apt

But did you want him to compare E with Textmate? His point was that he switched to a Mac and wanted to compare what's out there for RoR on Mac: in his case, Aptana, which he was already using on Windows, and Textmate. Two different things, true, but the former is what he was used to on Windows, and the latter a very common tool for RoR dev on Mac. As he says in the post, that kind of decision ends up being very personal anyway. I settled on Textmate recently but I'm not sure that will be the case forever. (personally, I'd go for something in between: the speed and simplicity of Textmate with functions like the navigation between classes, auto-completion but without the slowness shown by Eclipse et al)