This slender little beauty really knowns how to rock. It may not be the last work in resolution, but everything else is there. I know I'm starting to sound like the Rega rep, but these decks are not stop gaps. They are very, very good. At least IMHO.
That's correct doc. You're getting all of the musical essentials right with that deck. Without sticking to any particular brand be it Rega P5, P7, or VPI, Nottingham, Well Tempered, etc., as you move up you will notice more resolution, quieter backgrounds, more speed stability, which yields bigger soundstages, fuller and more solidly placed instruments and singers, tighter and deeper bass, etc. But the basics of rhythm, tempo, tone, detail, clarity, soundstage, imaging are in the P3, you're not missing anything in your equipment, I didn't mean to say that. You almost have to hear it to understand, but I wouldn't stress on it if I were you. The Rega deck is great fun to play with for some time. You can get a new subplatter, a new bearing, a new platter, different mats, VTA adjusters, different counter weights, just Google up Rega mods, you can spend years fiddling with what you have. Enjoy!