I used MMBot 5.44 final for a short period of time.
It works, but in some cases its a hastle to get running. It took me about 2 days to get mine working.
Plus, the guys on there forums arent the nicest
I ran it for one night, did 230 runs and only got a Nec Summon GC. If you have good mf, and many cd keys, it could be worth it. Your choice.