Naim Audio system owners - What speakers are you using with Naim?

My main system is full Naim 500 series with passive Naim NBLs, I used to have a 282/250 on them before that with either a Hicap or Supercap powering the pre. Before the NBLs the 250 was running into Thiel CS1.6s. When I bought the Thiels the dealer demoed them with Accuphase and they really couldn't produce any excitement from the likes of Tool and even with Scriabin there was a haze around the piano. I nearly didn't try them at home but I'd run out of all other options locally so gave them a go. With a 282/250 up them they took on a somewhat livelier character and earned their place. As my source was upgraded it started feeding a bit more low bass into the system which was exciting a room mode, not helped by the ports on the Thiels, the NBLs were taken in part ex by my local Naim dealer and I didn't think they'd work in my 4m X 3.8m room but we found a spot where they work a treat, I doubt I'd get many full range speakers to work in that space. I still have the Thiels and 282/Hi/250 in a second home and there I have 6m X 7m for them to breathe in but bass is there a bit light. When I set that second system up my wife said she'd missed that sound and there is something about the thiels, though the NBLs have them on rock. I'd love to try some 3.7s with the 500 series in that room against the NBLs and might get the chance when I retire next year, if I can find a pair.

Thank you for taking the time to post yeti, great information. I’ve never heard Thiel but have seen great write ups. Sad the owner passed away a while ago.

@joeinid  

PMC & Focal speakers will have best synergy with Naim electronics. 
Ever since Focal acquired Naim, Focal has been voicing and tuning their speakers using Naim electronics. B&W will pair well with Naim too. 

Naim also makes awesome musical sounding streamer/DAC. I'm sure you are aware that you will have to use DIN connections to connect between Naim components in order to achieve best sound. Don't use RCA connections. That's why you will have to go all the way Naim, starting from their streamer/DAC, preamp & power amp and make use of their DIN connections to connect between them. No other hifi manufacturers make use of DIN connections as far as I know Naim is probably the only manufacturer that does that. DIN is pretty much like Naim's version of XLR balanced analog connection. However the Naim Statement NAC S1 preamp & Statement NAP S1 monoblock amps provide DIN, XLR balanced & RCA connections. 

Naim amps power output ratings have always been conservatively rated and while their power output ratings (wattage) are usually low but their power and current delivery are very robust and are capable and have no problem of driving difficult speaker loads and are stable down to low impedance loads. 
Current delivery that matters and is more important than the power output ratings (wattage). And I will guarantee you that say a power output ratings of 100 wpc @ 8 ohms off Naim amp will be very different than the same power output ratings of the same 100 wpc @ 8 ohms off an AV receiver or some cheap integrated amps or some cheap power amps. 

To me Focal's - Dynaudio and Kudos have great synergy with Naim.

Dynaudio too.