Amp for Mirage M1 Si's??

Picked up a pair of M1's and am wondering what might
be the best amp for around $500-$1000 or so.
They are very power hungry it seems. I have a 200 W/PC
integrated that by itself is on the warmer side of nuetral
and these M1's seem to still be a little under powered (83db)
and on the darker laid back side. What would give these
some sparkle & kick?
I like the overall potential of these to pursue the
right amp.
Room is 20x20x12

Any suggestions greatly appreciated!