As an owner of NAD integrated amp C375 Bee and C275 amp. I also paired them up to the PSB Imagine T's. They have a very clean and neutral sound that really got me revisiting old music and enjoying all over again. I have also discovered and now rate even better, Ohm Acoustics speakers. I bought an old pair of FRS 11's and then had them upgraded. Yes, you can upgrade older speakers here, to the latest generation. In this case to the 3000 series. 2 K for the upgrade but to my ears, totally worth it. They are incredible for presence, depth and clarity. They sound like the performer is right next to you in the room.
Ohm does have speakers to fit your room size, so it is good to call them first and they can advise on which speaker, room size and price point you are looking for. Plus their warranty and return policy is very good. They have a web site
http://ohmspeaker.com/ .
It doesn't cost you a thing to look at and you can audition them.
Good luck on your speaker quest!