I have a Technics SL-1210 mk2 with an Ortofon 2M blue and I am part way through the early stages of a deep and clearly meaningful love affair with my few-day-old Accession.

With the 1210, am I limited by the integrated cables as to the final output or would upgrading to a bronze or black make a significant improvement?

With Ortofon the original Tech captive cables should not be a limiting factor. The original cables were supposed to be fairly low capacitance (e.g. 120-125pf) though there are occasional issues where someone replaced them with something non-standard and https://www.kabusa.com/production_rpt.htm - a particular model year run where Tech used the wrong cables . 

If you have any doubts you can get a cheap capacitance meter and measure from the headshell socket to the RCA male end and see what is what.

I don't use the 2M carts myself but they are very popular generally, especially the models from the Blue and upward.

As long as your 1210 is in proper working order it should be able to "handle" carts that cost much more than the turntable.

I started with an album with high production values I know well and on a heavyweight pressing, AT damp clean and a brush with my new P******t premium brush (got to protect the stylus).

Very quickly realised you were all correct, as always, that there’s stuff you definitely don’t hear on the lesser styli, particularly at lower volume, I was quite surprised to hear nuance and depth that I clearly didn’t hear previously - the Accession obviously made a massive improvement, but (less than one album in) this is another leap. 

What a thing!

Trust me, the Accession attached to the Enigma, receiving from the 2M black is an absolute revelation, I haven’t stopped playing records all day.

Just poured a g+t to start the evening session…

Please All, talk to me about record cleaners and amplifiers, I have gone from Woolworths tower cabinets to live concerts in the last 24h, and I don’t know where I’m going to stop!