I have been using Aptana Studio 3 myself and I have to say that I like it so far. Which is odd because after using the IDEs I have used in the past I always ended up back with a text editor to write my code in.
I was curious about Eclipse as well and that is why I ended up at your question. I watched the Eclipse demo at the Eclipse site and I think I'll be sticking with Aptana. Just because it does appear to look and function very similar and I have decided that I do like Aptana. I was just searching to see if that was a certain feature or improvement Eclipse could offer.
