Just bought the full version of ahome to replace the touchwiz home with a more stock android feel. reasons why its better:
-icons snap into place when arranging desktop
-multiple home screens (i have 5 going instead of the stock 3)
-app tray scrolls smoothly (like stock android)
-no cube-like screen transitions when flipping through desktop.
-stock app tray
-touchwiz elements removed (when using ahome only)
-still have access to cube menu
there is much more too!
full version is $4.99 on android market and totally worth it! get it today, i promise you'll love your phone that much more.
to purchase aHome you must by it directly from the developer as they do not officially support the 1.5 market. they accept paypal and will email you install instructions and two versions of aHome, at least that's what they did for me. one will work on android 1.5 and the other works on newer versions. YOU WILL NEVER FIND AHOME ON OUR VERSION OF THE MARKET!
Here is the developer's website: http://www.mappn.com/soft.php?id=2
i don't represent the developer at all and only suggest aHome because I love it. Buy it at your own discretion.