I would suggest getting the Rega P8 and keeping your Dynavector, which is a very nice cartridge and preferable (IMO) to an Apheta. The P8 is superb turntable and a big step up on the RP6.
turntable recommendations
I'm currently running a rega rp6 with a groovetracer subplatter and a dynavector 20x2 cartridge. I quite like it, but Upgradeitis has set in. My goal is to get a noticeable improvement without breaking the bank, say $5 K absolute tops. I prefer new. Based on my search to date, my current finalists are a rega p8 with apheta 3, or a dr. feikert volare with Origin silver mk3a tonearm and a hana ml. Others I seriously considered are a clearaudio performance DC wood or a VPI prime, but with those I would have to put the Dynavector on it to stay under budget and it already has high hours on it. None of these choices are available to demo in my area (Seattle) so I'm reaching out to my audiophile brethren for your experience, to better inform my decision.