Back-up Help?

[Myst3ry]

Alright, so ever since i got my TP2 i have been flashing maybe the best only (by reading hundreds of posts!! ) in the end, i ended up with about two or three fav's that i will be switching back and forth from every so often... BUT every time i re-flash, i loose everything i have done! (installed apps, re-arranged menus/tabs, settings, etc)
so is there something like a back-up that i can just restore from? (that way i can restore certain back-ups for specific ROMs)

So... yeah! haha any help with this will be greatly appreciated