Hi to start with what grade of stainless are you trying to drill, and what size hole or holes are you hopeing to drill, As for the type of drill you should be useing the best are dormer a777 or any type of hsco "8-12% colbolt" should be enough, As for the machine i woulld go for something that has a hiednian control as they have a fantastic drilling cycle and many others that are really simple, the only other advise i can give at this moment is for you to stay well away from haas mills and lathes the programming is rubbish and very hard to use,
Philip