I built a pair with 3015HOs and used then stacked with a Carvin B1500, a Traynor 300w valve head and a Mywatt 200. They do exactly as BFM claims. The sound that you hear is the sound that the audience hears and they hear it everywhere in the venue. Each note is loud and clear and the cabs are also very efficient.
But, there's always a but, I didn't like the sound that much. There's not a lot of deep bass. Plenty of mids ands highs but not a lot of depth. Don't get me wrong, the bass isn't missing, it's all there but it's not the sort of bass that comes out of the cabinet rolls across the stage, falls onto the floor and then up the trouser leg of anyone that's listening, if you know what I mean.
Our very own discreet came and tried them out and preferred the sound of the Jack 12s, perhaps he'll pop in later and can give you his opinion as well.
If you like a well balanced sound then they're brilliant, but if you like a bit of rumble then they're not for you.
I've still got mine actually, all sad and lonely and looking for a new home. Not quite sure what to do with them. I might just take the speakers out and sell them separately.