Gansulin is an automatic pen, where you dial the dose and press a button and it goes. You don't actually inject anything, the pen does it. It can be expensive (AE has em for $115, but US sellers are anywhere from $52-80), but well worth it. The Bird pen is good, it's just made with plastic and the injection mechanism is a little odd, but it's auto too. That one is about $30.
Pens are so good, but there's so much extra waste involved. The vent needle, the plastic from that, the plastic from the cart wrapper, etc. Still, I won't go back to vial and syringe again and wondering if I'm truly at the unit line I need.
Plus, you don't need to worry about the needle dulling because you're sticking it into the vial first, then into you. Pen needles are sharp and go in smooth.