Are Allin one brewing systems worth it?

My water boiler/mash tun has just given up the ghost, and I'm considering what I will replace it with.

I've been looking at the Grainfather units, and while they seem impressive they are pretty expensive.

To people that purchased one and particularly if you upgraded from a more simple set up, was it worth it? Also what's the clean up like?

edit: can't changed the misspelled title!