I was discussing this with another LDer a few days ago. I said to him that I had experienced a new kind of flying in my last LD: swimming in the air. The we started classifying our flying experiences, and found out that they could be classified in four types. This is based on our shared experiences:

1) Normal type: You feel yourself floating or flying in the air, and you have to control your direction and speed. It's hard to get it right.
2) Supersonic type: You fly straight, at an extremely high speed (usually going through walls), but you can't feel anything or do much.
3) Swimming type: You feel the air as a dense liquid, and you fly using swimming movements. You fly slower, but with better control. Sometimes you feel air currents. I think this one is more enjoyable than the normal one.
4) Artificial type: You don't fly by yourself, but using an object or DC. It could be a string attached to a cloud, a bird, etc.

Do you know another type?