I currently have a pair of Jim Rogers JR149's and I love them. Very clear, and very punchy for small speakers. I've been on the lookout for a pair of JR150's for a year or two though. The other day a pair came up (eagle-eyed eBay watchers may have spotted them) and I jumped at the opportunity. I know there are those that say the 149's have sharper imaging, due to the simplicty of the two-driver design. For me, that is of less interest than the heft that should come from a three-driver system. I'm keen to hear the two side by side.
I know Jerry has had 150's and liked them. It'd be interesting to hear what others have to say about the relative merits of the 150 versus 149... I'll obviously report my own findings when I've had a chance to hear them in-situ.