VPI Scoutmaster to HRX

IMO, possibly a lateral move.

A non VPI arm and the Phoenix/Sota speed control is what I’d do.

Many "better" arms to choose from that you could later use on a future "better" non VPI table.

Longtime VPI Classic user.

Edit- no upgrade unless phonostage is already $ maxed. 

I doubt if you'll hear much of improvement....if anything at all

Why the HRX? It's long been out of production. I'd look at some of the current VPI tables. A version of the Classic 3 is being produced and that seems like a good table to look into.

Will you be using the same cartridge and phononstage?  I recently upgraded my VPI rig with good results. But, as I often do, I lack the self discipline to make one change at a time. I went from a VPI Super Scout with a 10” JMW unipivot arm and Hana ML to a VPI Prime with 10” 3D gimbal arm with their Shyla (AT) cartridge and the overall effect was very positive. I kept the same cabling and preamp. 
 

So, assuming you have more willpower than me, consider making smaller steps but let’s face it, it’s fun to explore new equipment and I suspect the fun-factor is part of your equation. It certainly is for me. BTW, new phono preamp is in transit (Sutherland Little Loco).