I think Richer Sounds is still the only place selling CA stuff, so they're bound to promote it. Make some fine products I'm sure, I've never actually heard any to comment on.
They should have the Roksan Kandy K2 in there in their premium section, worth hearing it against a cheaper models, perhaps Yamaha's AS500, Marantz PM6005 or Cambridge Audio 651.
The Yamaha could be interesting for you as it has a sub woofer output in case you ever want to add more bass, and a powerful 85w output. Never heard it to comment on sound quality, but it was an award winner a few years back, is stacked with features and costs half of what you budgeted for. You could even add a network streamer like Denon's DNP720AEor Cambridge Audio's NP30 for £200 and still be under budget.
Unless it's a large demo room, you'll probably find a big difference between how it sounds in your large space back home, worth bearing in mind if the BX6 for example sounds boomy - given more space and plenty of power they might be just what you are looking for. I've heard BX5's plenty of times and bass isn't lacking in a normal sized room but you might be happier with the BX6 if its within budget. Build quality is first class on the BX speakers too, they look far more expensive than they are.