Rega Planar 2 vs Project RM4

I don't think it would, both should be better. Not sure about RM4, Xpression sounds good even with included cheap cartridge. You will probably want to add speed controler if you go with Pro-ject - definite improvement. Rega is good too and very popular.

Something to think about. The current version of the TD160, which aside from the suspension and motor is cut from the same basic cloth as the one you have, starts at $2,899.

I've used and still own, both the Oracle Delphi and Sota Vacuum Saphire tables. Neither is as musical or 'right' as the Planar 2. I replaced the original motor with the Rega Upgrade and am using the SRM platter. The Michell Technoarm w/Denon 103D completes the package. Highly recommended.