I own a P5. It's modded a bit. Didn't get a Groovetracer, but I did upgrade the subplatter with ceramic ball bearing. Easily the best upgrade I've made. It also has Michell counterweight. The counterweight improved the bass, but this wasn't a huge improvement. I think you're at the end of the line in upgrades to your deck. I know I am. I don't see the point in getting a different platter. What I have done this year is get a Benz-Micro Glider with Musical Surroundings Phonomena II+. It was time to replace the cartridge, so I matched the Glider, which I bought here at a really good price, to a phono stage. I was actually looking for a Benz-Micro ACE. Didn't find one cheaper than I paid for the Glider.
The phono stage and cartridge were huge upgrades from a Benz-Micro Gold with a Creek OBH-9. For more subtle improvement, I also added a Jolida XT-R.The Jolida solves the azimuth problem with Rega arms not having any way to this. The Phonomena II+ was a trip down the rabbit hole. I probably would have kept the Creek if I had found an ACE. But the Phonomena II+ is a solid phono stage. I was looking for a used one, but, ended up using a 15% off coupon on an auction site to get the Phonomena II+. I doubt I'll ever replace it. The loading and gain settings are really nice. And it's dead quiet. Supposedly, the Nova is quieter by 5dB. However, I'm very satisfied without the battery power.
The phono stage and cartridge were huge upgrades from a Benz-Micro Gold with a Creek OBH-9. For more subtle improvement, I also added a Jolida XT-R.The Jolida solves the azimuth problem with Rega arms not having any way to this. The Phonomena II+ was a trip down the rabbit hole. I probably would have kept the Creek if I had found an ACE. But the Phonomena II+ is a solid phono stage. I was looking for a used one, but, ended up using a 15% off coupon on an auction site to get the Phonomena II+. I doubt I'll ever replace it. The loading and gain settings are really nice. And it's dead quiet. Supposedly, the Nova is quieter by 5dB. However, I'm very satisfied without the battery power.