Advice on best mid priced MM cartridge choice for Rega P3 (2016)

I used a Denon Dl-110 on the same table, sounded great. People seemed to like the Nagaoka better though.

I went from Grado Red to Ortofon Bronze, best $500 I've spent on audio so far.

You also might wanna check out Ian’s YouTube channel, HiViNyws. He auditions a ton of carts and often uses a Rega deck. 

Some killer Moving Magnet cartridges at mid price in my opinion:

Sony XL-50 with boron pipe cantilever. 
Pickering XSV/4000 with Stereohedron stylus tip. 
Pioneer PC-1000 MK II with Beryllium cantilever. 
Stanton SC-100 WOS with sapphire coated cantilever and Stereohedron tip.

Best buy is Pickering XSV/3000SP (under $450) or just regular XSV/3000 and its brother Stanton 881s for under $350 NOS. It's extremely low price for a high quality performer with amazing stylus profile that can be user for over 1000 hrs. Those carts were offical disk mastering monitoring cartridges of Doug Sax at The Mastering LAB. 

Compared to these cartridges all modern MM in this price range are junk in my opinion.  

I’m willing to bet that the Teo Audio ’CC’ MM cart, with a shibata, at $600, outperforms them all, Chalkster. Everything I know, multiple kitchen sinks..are in that cartridge. There is stuff in there...never seen in any cartridge.

So no, not junk.
The cartridges are new. Too new. Just arrived, in a crowded market. And when it becomes known, the prices will...by necessity... go up.

Consider the gauntlet thrown down. :)

The ’money back if you don’t like it’ (on the basic version) says it all.

Eg, the first buyer bought the CC version (carbon Composite shell) with a nude elliptical. His Ortofon A95 is away being re-tipped. Purchased to be his interim cartridge. He called it ’A triumph’.

I can do better, but I'd have to re-design all the alloys, metals, and plastics from the ground up. All of that is in hand, but unavailable due to financial constraints. And that means we have to sell a few of these - first.