Having used CC6, toyo neo 3, Michelin ps3, ecopia ep200 ep300, yoko bluearth, there's some advantage disadvantage to all the tyres.

Currently on CC6, neo3, ep200, ep300 and bluearth.
CC6 have soft sidewall. Not as soft as primacy tho. That's why I didn't go with primacy. Easier to puncture say compared to neo3 or even my prev ps3

Got good experience with ps3, used 2 sets of them. Then I got old and feel I don't F&F like I used to and ps4 is more expensive.

Slow speed good comfort I think CC6 is best. Just that soft sidewall might be more prone to leak.
That toyo proxies c-something was just released to replace neo3. Neo3 harder sidewall to CC6, a bit noisier. I'd get the CC6 until more feedback from the new toyo