Upscaling Speakers, Downscaling Amp...What to Do?

A few months back, I purchased a pair of Joseph Audio Pulsars. I've enjoyed them so much that I've decided to upgrade to the new Perspectives. However, my better half hath decreed that no more money can go into audio, so I've made the extremely difficult decision to sell my amp (VAC Phi Beta 110i) in the near future. Its replacements will obviously be significantly less expensive, yet they must provide a similar listening experience. The preamp is already fixed - a Modwright LS 100 with phono stage. My question for the board is, what amp? Tube or solid state? Cost (used) needs to be around $3000-3500, and a minimum of 100 wpc. The obvious pairing is either the Modwright KWA 150 or KWA 100SE. I would welcome any another other suggestions, but if you do so, please tell me why. Thanks in advance.
No, actually I have not 'made up my mind'. Please go back and read my initial post. The question I asked has nothing to do with either the VAC or the Perspectives (apart from the obvious amp/speaker compatibility issue. I'm well aware that I won't equal the VAC. I'm also well aware that the Perspectives will better the Pulsars. Just a matter of priorities. Needless to say, we have a fundamental disagreement about where those priorites should lie. I truly do not understand why folks on these forums cannot stick to the subject when I've laid out the parameters as best I can. Best of luck to you too.

I was in a "high end emporium" where we were enjoying the most glorious music on ARC electronics and top of the line Thiel speakers. That was the most fantastic sound stage I have ever seen. The illusion was so complete, that I felt like I could reach out and touch the performers, and the instruments occupied stationary positions in space.

Someone came in and wanted to audition a Rotel amp. Once this "mid fi" amp was inserted, the illusion fell completely apart; no more 3D sound stage. Remember, top of the line Thiel and ARC pre were still in the chain. What do you conclude from that?
Well, personally I don't conclude anything since it was your experience, not mine. It's a false analogy, regardless. Remember that we're talking about a move from one of the best integrated amplifiers ever made, to a superb preamp and whatever $3000-3500 amp that I end up with. Hardly 'mid-fi'. Again, it's a question of priorities.
To paraphrase the OP: I few months ago I got an expensive speaker that I liked some much that I now want to take apart my system and rebuild it with another, even more expensive speaker.

What am I missing?