I agree with TP. I've used adb because I thought it would be cool to have all the themes. I wasn't wowed by adb like I am with LPP. I have been running LPP for the better part of 8-10 months and will check out adv from time to time. I was so excited about the plus version of LP when it came out it was the first paid app I purchased. The scrollable widgets are great and the calender widget is what I use to schedule my life. My choice is Launcher Pro Plus. Have fun with them both and see which one floats your droid.
I've stuck with launcher pro since I got my Droid x in july, I switched to the Droid 2 in august though. I've used adw launcher, the defining feature of launcher pro is its overall smoothness and how quick it is. Its very accurate and responsive. None of the other launchers come near it in my experience.
I think I tried aHome way back when and didn't like it at all so stubbornly turned my back on replacement launchers. Then with the release of Froyo and the redraw lag many of us were experiencing (disappearing icons) and constant mention of Launcher Pro I gave it a try and now I'm in love. Launcher Pro felt like a OTA interface update; nicely polished with a number of graphical and functional options. As some have mentioned:
-A useful scrolling dock where you can place up to 15 links to shortcuts and applications which can then have a swipe action applied to them meaning 15 more functions
-Up to 7 screens
-Up to 10 rows and 10 columns per screen!
...and a lot more! Best of all is how smooth the scrolling is and I've had nearly no redraw lag!
Lpp has the option to pick your own custom icons or docks... which I find in the lpi (launcher pro icons) app or you can just download a pack off the market and apply it. 15 shortcuts/swipe gestures is amazing. The widgets are top notch, and the app is updated frequently and almost always adds something new. Its the only app I've rated 5 stars.
"Bootloader begins to learn at a geometric rate. It becomes self aware at 2:14 a.m. Eastern Time, August 29th. In a panic, they try to pull the plug. Bootloader fights back."