I have had superbike bend, clubmans, broomstick, and drag bars on a cb750 and the one I liked the best is the superbike bend. Super comfy and closest in bend to the factory euro handlebars. second is a set of drags, then borrmstick, then clubmans. Dead last on my list is stock hinda mini ape bars which just suck if you do any kind of perf riding.
One that I have heard a lot about but have never tried is a cb400 supersport low bar, basically a superbike bend with less rise and pullback and a tighter curve, popular with the DOHC cb750 supersport crowd. Here in the states the cb400 bar is very expensive but in canada it is less than half the price, so if you can help it buy it from a canadian dealer and have it shipped.
BTW loudfastugly burned down earlier this year so I don't know how successful you will be at getting parts from Brian.