What control scheme do you use for Killzone 2?

May be...

I want to know which control schemes you use in Killzone 2. I personally just use the default, but is it easier to choose another controller configuration? I do know that pushing R3 to aim is sort of strange, so what works best?

I really like the control scheme with L1 as the aiming button. It feels more comfortable considering that's what I use in Resistance 2. It does feel awkward trying to crouch at the same time though.