Rega P3 vs SOTA Comet III

Looking at a turntable upgrade...going from the base Pro-Ject model (essential), and have narrowed it down to a Rega P3 (current model with RB330) or a SOTA Comet (series III with RB 300). The Rega comes with an exact 2 cart and can be had for $1,100, the Comet, being a series III feels like a steal at $600, but comes without a cartridge.

For context, system is:

Vandersteen 3a signatures, powered by audio research D300, Denon 4700h pre, and Pro-Ject tube box phono stage.

So all things considered, Rega P3 vs Sota Comet series III? I respect this forum and grateful for any feedback/opinions.