Should I use 32-bit Eclipse or 64-bit development of Eclipse for Android? Im on a MacBook Pro (Core 2 Duo). Does it matter which version for Android coding?
The Java virtual machine makes the difference between the 32-bit and 64-bit versions, which are mostly invisible to you. So no, that doesn't really matter.
Android SDK will be launched either :)
The general recommendation is to upgrade to the J2EE version because it is packaged in the XML packages you need. If you come with a standard or a different version, you just spend more time getting all these packages when installing the Android plug-in. Be sure to run the updater until it finds anything in Eclipse before installing the plug-in.
Whatever you do, make sure you get the Cocoa version. Carbon was almost impossible to work with large projects (100% processor, 100% stack usage, slow "open type", slow "open resource")