ROMs are where you'll go next, for sure. I was the same way, all the ROM descriptions sounded kinda... the same as what I already had.
I started with Liberty 1.0. this totally spoiled me. I've since tried tranq, apex 4.1, darkslide and one more, I can't think right now.
All of them were a bit different, but for ease of use and user friendly customization, no ROM can hold a candle to liberty. The toolbox is unreal, you'll really love it. Besides user friendliness, which nothing can beat liberty, your phone will react differently to different ROMs. Apex 4.1 for me was incredibly klunky and slow. Gummyjar was the fastest. Liberty the second fastest. Darkslide was pretty good too. I learned that I like to be able to sync facebook contacts with my current contacts and get updated pictures from facebook which can't be done with any Blurred Rom. I also decided that I much preferred wycontacts to the blur. So, for me, liberty and gummy jar are really the only ones i'd stick with, and Liberty has the amazing tool box, so, here I am.
Some users report freezing or reboots with liberty. If that happens too much, then maybe look into some other ROMs, but I really honestly think you should start with liberty simply because the handy liberty toolbox will show you just how much you can do with a ROM. Without the toolbox, it's basically like running stock without some of the bloat and some minor adjustments to the blur apps - all for the better.
And, as always, be sure you have your contacts in google before you go to a new ROM, and always follow the instructions! nandroid backup! liberty rom stations out of droid forums, so go there to get all theme info, battery info, everything.