Amp and Preamp recommendations for Yamaha NS5000

There are 2-3 easy recommendations that come to mind for the 5000s:

a) Musical Fidelity 800 NuVista or the latest M8xi
b) Dartzeel integrated model??? (there's only one I think)
c) Accuphase e480

All are integrated and their performance (IMO) easily beats any separates you can get anywhere near the price.
Just an idea! Regards

Luxman pre + power.

These speakers like a lot power so maybe the all new Bladelius Audio Oden Integrated amp... 

 http://highfidelity.pl/@main-998&lang=en

Luxman m900u looks good. Going to take a hard look at it.
Also musical fidelity seems a great value thanks.
And ya I agree it seems these are speakers that need power so I am confused by the recommendation of 25 watts per channel class A? Just because I am in a smaller room. Wouldn't that still impair the full voice of the speaker even at low levels?
I admit 1 problem I had with the speaker is the soundstage tends to collapse a bit at low listening volumes so I do wonder if a higher quality amp can fix that. Might just be inherent in the design?

There is nothing in the measurements to suggest that the NS5000s need a lot of power.In fact they indicate the opposite.I do suspect however they might be better with low /no negative feedback lowish damping factor amps.A medium powered push pull tube amp even.