Technics SP10-Mk2 Rega RB300 Combine

The Technics is a very good turntable since I'm using one myself. Currently I'm using the Koetsu tonearm and Koetsu Black Goldline with it. Since your turntable is an heavily used turntable from a broadcasting station, I suggest you should oil the motor as soon as possible in order to prevent wear. It is very easy to do, just remove the mat and then you will see three screws in the platter. Unscrew the three screws by using a small coin(penny), remove the platter then you will see there is a little hole near the spindle, just put 2 drops into the hole then you are in business!

I don't recall if the Technics SP10 is a belt-drive or direct-drive turntable. If it is a direct-drive, my personal suggestion is to avoid it (given its age and amount of use), and get a newer belt-drive unit. You can often find used Rega Planar tt's on Audiogon for very reasonable prices.

Sorry -- didn't read your post carefully enough. On second reading, I note that you already have a Rega P3. It's a fine table, and I doubt the Technics will beat it. If you simply want to upgrade your Rega, look at used VPI tables - such as the HW-19 Mk 4, or the Aries. Your Rega RB300 arm is a decent arm, but if you pair it with one of these VPI turntables, I suggest you have the arm modified. I currently own a VPI HW-19 table with the Rega RB900 arm, and I've been very satisfied with the combination. If I upgrade any further, it will be to buy the VPI Aries with the JMW-10 or JMW-12 arm.