Acoustic Systems for Audio Research VT100Mk3

What the speakers better to use with my beloved Audio Research VT100Mk3?

Now I have Klipsch KLF and in my opinion it is not very bad, but the sound of a little rough/sharpest. I would like to get more comfortable and more detailed sound with deep and tight bass!
Thinking about purchasing of Wilson Audio Puppy, Legacy Audio Focus HD or SE...

My preference is rock-music - from art-rock to the most extreme genres of metal...

Stereo System:
Analog - Avid Volvere/SME309 with phono stage - EAR834P
Digital - Krell KPS28c
Pre Amp - Audio Research LS16

Thanks!