VPI HW-19 Jr. Upgrade


I am considering upgrading my VPI 19 Jr. w/AQ PT-6.
I've narrowed it down as the followings.

1. Upgrade my Jr. to the Mk4
2. Put the Scout platter and bearing on my JR
3. Upgrade to the Scout/JMW-9 and sell my JR./PT-6
4. Change JMW 10 Tonearm

What is my best bet in upgrading from my Jr.?
What kind of sonic improvement can I expect?

It would be very appreciate if you give me an advice.
Any other suggestions are welcome too.
tranmoon
John Zurket at positive-feedback.com recently reviewed my pandafeet sorbothane footers with his VPI 19 Jr. and raved about the results:

http://www.positive-feedback.com/Issue13/pandafeet.htm

I'm sure plenty of other products would work as well, but it does seem that vibration control helps the performance of these tables.

(mods, feel free to delete this post if you feel it inappropriate)

Gary
I started out with an HW-19 plinth and MkIII bearing and platter. Then Aries 2 platter and bearing with more sound improvement. Then I built 2" cocobolo plinth with lead load to replace the HW-19 plinth which move my TT into a whole different level. You can pick your plinth design from Teresaudio.com and use VPI platter and bearing instead of Teres. I used classic tonearms such as SME 3009, SME type III, Black Widow, and various Audio Technica Broadcasting tonearms.
I upgraded my HW19 Jr by adding the MK III platter and spindle and noted improved detail especially in the bass.
I got an email from someone here on Agon several months ago about making a plinth for the Jr from kitchen counter material like Corian(sp?). Haven't tried that yet but he claimed it made a nice improvement.
I started with a Jr. w) PT-6 arm and an Ortofon (don't remember model number) cartridge. Upgraded to a Mk III and finally a Mk IV. Still have the PT-6 arm but now use a Sumiko Blue Point Special cartridge. Sounds great --- although the turntable guru at my dealer tells me I really should upgrade the arm. Maybe someday, but for right now I'm more than satisfied.