Ageing CNDP

I'm working out what to withdraw from storage before a new annual bill kicks in, and it raises a question I've mulled in the past: how long does CNDP age, when is it best, and to what extent can one generalise.

I've heard people say to leave it 10 years, but in my limited experience it can be neither youthful nor mature at that point. I was also interested to read someone online saying they understood that Pegau recommended younger drinking of their Cuvée Reserve.

Obviously, Clos des Papes and Beaucastel can age for a very long time. But the specific challenge I have is a 2009 mixed case - two bottles each of the following. Be interested in any views (I've included TWS drink dates but they were famously conservative at that time).

Some I expect have years ahead. But others maybe not.....

-Châteauneuf-du-Pape, Domaine la Boutinière, 2009 (2013 to 2019)

-Châteauneuf-du-Pape, Château Mont-Redon, 2009 (2014 to 2023)

-Châteauneuf-du-Pape, Domaine Font de Michelle, 2009 (2014 to 2023)

-Châteauneuf-du-Pape, Bosquet des Papes, 2009 (2014 to 2023)

-Châteauneuf-du-Pape, Domaine de la Roquète, 2009 (2013 to 2021)

-Châteauneuf-du-Pape, Crau de Ma Mère, Mayard, 2009 (2013 to 2021)
I think I’d probably be starting to drink those, bearing in mind they’re now 13 years old.

Incidentally, while I take the point about TWS’s recommended drinking dates, I don’t think that has ever applied to the regions covered by Marcel Orford Williams. He’s always recommended quite ambitiously long drinking windows, although I find that wines he’s bought can sometimes still last well beyond his suggested drink-by date.
I have some 2009 Clos des Papes, and thinking of starting on it in the next year or two. I generally drink the more structured CNDP (e.g. Beaucastel) around 15-20 yo, whilst the lighter/more 'pure' styles (e.g. Theodoric) seem to be fine from 7-8yo onwards.
I think 2009 was a lovely vintage for CNDP. I have drunk quite a few of mine young for the fruit and they were great.

However over the last few years they seem to have been a bit reluctant but are coming round again and are now entering middle age.

I would suggest start to drink now but no rush.

The Wine Society's instance on removing whole mixed cases I a pain and a reason that I now rarely buy them. If you have a L&W account, or similar, it is worth considering moving the case to there where you can then just take a few bottles to try
Ah... I was very happy until, a moment ago, finding that to deposit a mixed case at L&W, you have to pay a £20 fee - per case (!). Hmm. That's not insignificant... unless I've misunderstood...