I have 50w+50w Tube Power Then What?

I am new to speaker system, but a long time player of heahphone rig.

Set up:
Meridan G08
SinglePower supra balanced headphone/pre Amp (RCA 6AS7Gx4, Mullard CV4003x2)
Sennhiser HD650/cardas cable
Grado RS-1 stock
Melody M880 mono (KT88 50w+50w) balanced
Cardas Golden reference Power cables
Cardas Golden reference RCA
Zu varial XLR

Now, I am ready for a pair of speakers and speaker cable. Can anyone help to pick up a pair? As now I am thinking Tannoy or Omega. I listen to 40% Modern rock, 20% female, 15% classic, 25% Pop, jazz or anything sound good. Room size about 20x18x9, mid size room. Must be under $6000 USD new or used. As sound singnature, I think Grado RS-1 is way too bright for my tast, HD650 is a little too dark. Thank you for your input.

best regard
Griffin