I prefer Test E or Test cyp over sustanon anyday. With cyp and enth you get a stable dose where you only have to poke twice a week. With sustanon your blood levels are constantly changing. To get them stable you have to poke at least EOD and or else supplement it with Test Prop. Im sure guys have done it with sustanon, but for me it seems alot easier to hit 3-4 cc's per week and have a steady gram floating around your bloodstream rather than 30mgs of this, 60mgs of this, 60 mgs of this and 100mg of that to worry about.
Lastly, sides and PCT is much easier with Test E or cyp. Remember stable blood levels lead to less sides.