what speaker new or used for 5k?

Without knowing what specifically you're looking to improve upon it's not possible to make a good recommendation IMO. I will say in that price range I'd look at Joseph Audio Pulsar, Vandersteen Treo/Quatro, and Reference 3a Grand Veena. I'd guess any of those could yield improvements in overall resolution, imaging, and soundstaging if any of those areas are of importance to you. Best of luck.

The VA's are just a little too laid back and congested, I have added the Mosaic speaker cable and interconnects which made a big difference with the sound. The WT is a great sounding speaker but just a bit bright and a little thin for my taste, but I think I'll use those for a different setup. I have been really looking into Intuitive Design gamma summits, I have heard the bigger brothers to the summits and the sound is breathtaking!

Jughead,
You may already know, but there has been a pair of those Intuitive Design speakers for a long time on Audio Asylum, and I almost bought them last year before I went SET. I know that the dealer is motivated and will lower the price. They are really excellent speakers.

Hey Roxy54 what do the summits sound like compared to their bigger brothers?

Vandesteen Model 2 or 3. They'll work great with what you have now, and will sound amazing as you upgrade your components to one's that will really bring out what the speaker are capable of.