As far as I'm aware, OL & A&H are the only folks that use the convex limb design, mate.
I know it's all subjective & down to personal taste & I'm sure just about everyone will post their own 'personal' favourites, but from all the bows I've shot, by far & away the nicest (& by nicest I mean fastest/smoothest) would be Mark Horne's Combo longbow. To my mind (and no, I don't have chrono figures to back it up) it seemed just as fast as Adcocks I've shot in around the same weight range. If there is a difference, it can only be few FPS. I shot his 49# bow in Texas this year & it vastly, almost embarrasingly outshot my 58# Pronghorn T/D.
Again, it ain't the cheapest of bows ($1150 if I remember rightly) for the carbon/bamboo cored limbs, but it's also excellent value compared to an Adcock & there's no 3-5 year wait.