I have been away with work so have missed a few concerts on radio 3 so need to catch up .
Rachmaninov's 1st is my favourite among his concertos too. I think the composer's own recording is still the one that most sets my pulse racing, though as I remember Richter's is pretty good. Many years ago, when I were a lad, the concerto was included in one of the sequences of records that the BBC regularly played to the TV test card - I think in the mornings. Having heard it once, I used to switch on our TV almost every Saturday morning in the hope of hearing it, though I had no idea what it was, and every now and then I was rewarded and never tired of it. It wasn't until many years later that I found out what it was. I never knew which recording they used (and in truth, there wouldn't have been many available in the 50s) but the sound I remember was very like Rachmaninov's own recording, though it could conceivably have been Richter's.
I'm slightly surprised anyone thinks it would be appropriate for Mr Katin to comment on a public forum on a recent performance by a professional colleague. I'm sure he's too much of a gentleman to do such a thing.
The Naxos recordings of the composer playing his concertos , I find riveting.