I second the recommendation of
Goodfella! It's realistic, bends (so you can pack it), has a great curve, a soft, spongy head (it's good for blowjobs), and big balls.
I also recommend
The Outlaw, if you're looking to use something larger. It's impressive in size and has amazing detail in the design. It's a veiny monster beast. Like the Goodfella, it's made of VixSkin. I love VixSkin because it's safe, durable, and realistic.