I've auditioned the PSB Imagine T at a local dealer.
They sounded pretty darn good.
But for the songs I listened to (Hotel California, Superman, Time After Time, Don't Dream It's Over), I don't think they sounded any better than my Infinity P362s when I got home and "tried" to compare them from "fresh memory".
The PSB looked much better aesthetically and are much better built, though.
I think my KEF 201/2s sound a lot better than the PSB Imagine T - IMO of course.
They both have the Uni-Q drivers, but I don't know how the KEF 201/2s compare to the KEF Q900.