Hi All, and many thanks for all the replies. I'm impressed by the rapid responses.
And as Hector says, probably easier to call me Mike, it just seems boring using your actual name grin

To answer a point one or two made (and I should perhaps have said earlier) my room is quite large and a slight conundrum. It's about 4 metres wide x approximately 10 metres long. It's actually two rooms that have been knocked through.

I was using a setup across the width of the room, but it seems a bit hemmed in and not quite where I want to sit ideally. So I'm probably going to place speakers with backs to the window at one end, listening position about 5 metres away with the other 5 metres of the length of the room behind me (hope that makes sense)

So I guess the issue of a small room isn't necessarily an issue here re the 5500 bass weight. Also, if anything I could do with a bit of bass weight and warmth as that's what I'm currently missing - or at least I think I am!

Not 'Arf. I've had to work my way back up to where I am with the Naim stuff over many years! It was just the size, (and probably shape) of the M1s that didn't go down well with the manageress. Now I've worked back up to decent sizes after little Arcam standmounts and other such toys it seems like the time may have be ripe to try the Boothroyd Stuart sound once more.

Despite the lack of room size worries I'm beginning to think a pair of 5000s is probably a good and cost effective way to start based on the consensus.

Once again, thanks all for the advice.

LOUNGE - 218 feeding white DSP7200.2
GARDEN - DSP5000