Coming from VS I love netbeans for writing Rails code in.
I became very spoiled by Visual Studio's ability to let you explore libraries via intellisence. Netbeans is the only Ruby IDE I've found that comes close to letting you do that.
IDEA does that rather nicely. Its maven support can reduce your box to a paperweight when it reindexes, but other than that, it's a very nice product indeed.
If you're not working on a complex codebase, it is total overkill though.
Why do you need to "standardise" on a Java IDE? Do you standardise on vi, emacs, or Notepad? Can't developers simply use whichever IDE they prefer, keeping the code formatted in the desired format?
Pair-programming teams often standardize on an IDE, so that when you hand the keyboard to your pair, they don't have to exit your IDE and start up theirs in order to type the next few lines of code. Standardizing on Notepad is a bad idea, because there's no way to enhance it to meet your team needs better.
It's just a matter of getting used to the way of doing things, like any big app it has its quirks that you just have to know. Learn the keyboard shortcuts, you'll start liking it soon enough.
What are some of your issues with Eclipse? With only 6 weeks in, it might just be a matter of being unfamiliar with certain things or not being aware of others.
