Many many friends of mine have been treated for their various cancers at MD Anderson, and most have done real well. I have yet to hear anyone criticize the treatment they have gotten there.
I've heard many excellent things about them- at that time in my own adventures, Duke was leading with immunothearapy for melanoma, so we ended up there. It does help to have a Doc you really trust, which we did- old family friend. I actually had young medical people track me down in those neo-gothic corridors, grab my hand, and ask, "Say, I've heard you know Marv Engel? Hellofa doctor!"