what is the best sounding speakers for under 5000.

I would take a good look at Vapor Audio's Cirrus speakers. They start at about $3600 and go up with upgrades and matching stands.
I have a pair of Vapor's sibling speaker called the Breeze on order. I will be picking them up in a few weeks. The Breeze was a more affordable option for me.
Also used Joseph Audio Pulsars, the new B&W monitors with subwoofer .
Salk floorstanders are nice too. Devore Nines used.
Todd

I would recommend a home audition of whichever Ohm Walsh model is appropriate to your room's cubic footage. First, I would speak with Ohm by phone to see if your amp would be a good match. I haven't heard your PSBs, but I have heard others, and I personally found them a bit too bright for my tastes. My Ohms are very smooth, warm, yet detailed. They offer a very un-box-like sound, with a huge soundstage, and deep, powerful bass. I listen to a wide range of music, including rock, and they do a wonderful job with everything, IMHO. Your budget will cover all but the top of the line model, IIRC.

Yep Audiokinesis. Amazing value for the money.

A third vote for AudioKinesis. Duke's speakers do Zeppelin just right--most don't IMO--and I'm a major Zeppelin head. Just the right amount of finesse for classic rock without masking anything. Bonham is trying to bash his way out of my room right now on Zep II, and I'm loving every minute of it.