Hi Learsfool,
Pardon me I took a while to reply.
Sorry I have never used Dynavectors. When I got my Nottingham Hyperspace TT I started playing with MC cartridges right away. I went from a Koetsu Rosewood cartridge to a Shelter 901 MC cartridge. Now the Shelter 901 cart is mounted on a Nottingham Spacearm. The Shelter 901 cartridge is very detailed and resolving. Its a dynamic bold sound very different from the Koetsu Rosewood which has a much warmer sound.
I don't own a Rega TT and was considering buying one to play classical music and jazz music like you do. I'll continue playing around with my Nottingham Hyperspace until I find something better. Funny I used to own a Thorens TD160 but never found the time to modify it. I've heard good sound can come from a modified Thorens 124 or Lenco L75.
I'm curious to know what sort of speaker cables you are using for your Klipsch Cornwalls? I'm not a big believer in cables. However I had a dramatic deterioration in sound recently when I experimented with thicker Belden speakers cables. When I went back to my thin 14-16AWG silver coated copper no-name speaker cable the sound improved dramatically. Another reason why I love my Cornwalls. Even simple thin speaker cables work great with them :-)

