What about Aptana 3?

I tried aptana few months ago where only the beta version was available.

Unfortunately, I had a lot of problems and for this reason I turn back on NetBeans. Today I noticed that the version 3.0.2 is available but I don't want to make the mistake again, before changing platform, I would like to know by some Aptana's users what they think. Is there valid reasons to change my currently IDE Netbe开发者_JAVA百科ans passing to Aptana for RoR 3 developing ?

What are the features that Aptana offer and Netbeans doesn't has ?

IMHO you will want to use RubyMine. It's by far the most complete Rails IDE and you can really customize it to work the way you want. There is a trial version for 30 days on their site. I am currently using it in conjunction with the VIM bundle and loving it. Netbeans is not supported anymore so you will probably want to move out at one point.