Xtra-cut-ripfuel-juicebag is my steroid of choice.
But seriously, could you be more of a newb?
I'm just busting your balls. What is your cycle history, your training history, your stats (age, weight, height, bf%)? If you do a little reading you will find that whether you cut or bulk there steroids don't play that significant a role, it's a lot more your diet and cardio. Save cutting steroids for competitive BB'ers. Test by itself or stacked with just about anything will be a good cutter.