Uhm....
I don't know how much I have invested in recovery gear....
I bought a 2"x30' strap from Summit a couple years back, I think it was a Keeper brand. Looped ends, IIRC it was around $30-40.
I have two or three straps that I bought from a traveling tool sale... they had a 3"x10' strap for $10. They hold up good and for the price, they can't be beat. They have looped ends too.
I have a couple shackles, a hook, and *gasp* a piece of chain, an there's a 4" strap around here somewhere plus a 2" of my dads. And my 8000# winch.
I have used multiple winds of rope before when I needed to make up about 8" between a strap and come-along to get a truck on a car dolly before. (strap was wrapped around my hitch).
But it would be totally unsafe to think of using anything not recommended or not proper for recovery of a stuck vehicle. Using some rope to get a truck on a car dolly is one thing, to try to use a length of regular rope to pull a truck out of a mud pit is stupid.
The piece of chain I have for recovery use is my "when all else fails" piece... It's about 2' of the heaviest chain I could get when I bought it. I have a couple different hooks for the ends and I will only use it for when I take up the slack slowly and just keep pulling. If I have to jerk into things I refuse to use it, too risky. But it will adapt to situations where a regular strap just doesn't quite work (or for doing redneck bodywork....)
That's also why my straps have loop ends. I don't want a hook to shear and come through the back window of my truck. I have a big hook and a big clevis, plus a smaller clevis that's the right size to fit through the hole for a ball on the bumper of my choptop. If I manage to break the big clevis or hook I'm in serious trouble....