Hey Darrenmcc,
Congrats on the purchase of the FB1+ and if I read right the upgrade to the i series?
I started out with a pair of the FB1+ then picked up a pair of TB2+ (for the surround sound setup) before moving up to the PB1i. I was driving them all with a Cambridge Audio 640R until my Brytson gear turned up, 4B SSTSq, BP26, BDA-1, BCD-1. Wow what a combo!
They all work so well together you could say a marriage made in heaven. Well I think so anyway

You might be interest in a good review for the FB1+ that I found
http://www.positive-feedback.com/Issue25/pmc_fb1.htmThe bass from the FB1+ is lovely, tight, controlled with a very clean roll off. A very easy listening speak the sort of speak you can listen to all day long, not harsh in anyway. The Bryston gear transforms the speakers again. I have to say that going 3 way in the PB1i has been the best step up in terms of sound quality in mid range and vocals area. Everything is so much more cleanly defined.
Just to comment on the bass from the PB1i, they are a huge step up from the FB1/OB1's, I wanted more in the bottom end but thought the EB1’s would be to big for my room. There was none in the country at the time but I was very comfortable with the sound signature of the PMC range so felt pretty confident buying them deaf. (I guess you could say) So I bit the bullet and order the first pair of PB1i in Australia. So glad I did
The PB1i can whack you in the chest with the bass, I’ve had them cranked up with the 4B just starting to clip and there was some serious pressure waves in the room I can tell you. Mind you that was only for a very short time and I was amazing how clear and undistorted the music was. PMC love lots of clean power, they’ll happily run all day at very high levels, but your ears won't!
Now the Bryston gear is in place, all I have to do it enjoy them. I find myself more and more being lost in the music with the speakers and gear disappearing. What a joy.
If you ever get a chance have a listen to the PMC MB2's which are beasts!
I’m sure you’ll be enjoying them for many years to come.
Cheers,
Q