Im supprised that you assume the op has noidea what hes talking about, for all you now he repairs PCB's on a regular basis and is just asking what the best machine is to fix his product amongst others, particular BGA machines would cover a wide variety of repair withing the same brand and many others.
If you have lots of use for a bga machine I think the Achi ir6500
is good value and all machines have free shipping from BGA Supplies
If you are happy to learn how to use these machines or if you already no how as I assume the op must do, you can make alot of money using these machines fixing PCB's or reflowing/reballing equipment like pc's, laptops, xbox's, playstations and even industrial equipment. If you do have alot of requests for repairs then you definately cant go wrong with something like a ZHUOMAO ZM-R5860C
as its an awesome peice of kit.