I have the Smittybilt wind breaker, mesh bikini, and tonno. I was really surprised how much the windbreaker cuts down on the wind. My wife insisted on it because she was tired of messing up her hair.
As far as using the tonno vs not using it, I don't notice that much of a difference. I think the tonno does more to keep wondering eyes away from the bed than anything else.
I prefer the feel of doorless and topless driving over all the extra stuff, but when SWMBO is riding shotgun, I don't have too much choice.