My guess is that if you didn't like the Paradigm, you probably won't like the PSB, as both brands have a similar house sound.
Well, it's true that they both draw on research from Canada's National Research Council, but I think they have subtle but distinctive differences. To my ears, the Paradigms have a little more "boom 'n' sizzle" In fact, if you look at the Stereophile review's response curves of the Paradigm Studio 20 vs. the PSB Imagine B, you'll see that the Paradigm has a +4dB hump at 100-130 Hz (boom), a depression in the midrange from 1200-2000 Hz, and a rising upper midrange and treble (sizzle). By contrast, the PSB Imagine B is practically textbook flat, with no rises in the boom or sizzle regions, and no midrange suckout.
Personally I like PSBs a lot and have never been able to cozy up to Paradigm for this very reason.
I also really like GoldenEar for their smooth, fast, extended folded ribbon tweeter that's free of ringing and overshoot.