Actually, the new IDEA 9 now has a free, open-source version, with most of what you'll want. There's still a commercial version with some more features enabled.
<a href="http://www.jetbrains.com/idea/features/editions_comparison_matrix.html" rel="nofollow">http://www.jetbrains.com/idea/features/editions_comparison_m...</a>
NetBeans' profiler is great though. IDEA doesn't have any - I use YourKit, a 3rd-party commercial profiler.