I had a tubular winch bar but bitter experience proved that it didn't give me enough protection on the corners. I replaced it with an ARB bar which IMHO offers much better protection. I preferred the look of the tubular bar, but I've gotten used to the ARB bar and quite like the look of it now.
As Glenn mentioned, the ARB bars can be shimmed out. They come with shims but you can make up your own if you want and achieve your desired clearance. Side clearance can't be fixed by shims though.

