I started with a 4 line for the simple fact that they are easier to launch and land by yourself, no volunteer needed to put their life at risk you can fly a 4 line just like a two line, just ignore the brake lines except to launch and land until you start to discover what they can do in flight
The Buster Soulfly 3.3m is a fantastic beginner kite that you will never outgrow. Here the Buster took me to nearly 48 MPH in a bug! http://youtu.be/_1zLq0xt0n4

pkdkitesusa.com

I have to add, I watched a guy destroy a 2 line foil at the beach trying to land, then I let him fly a buster with a couple pointers and he did fine.