I’m a big fan. I think the 222 is an absolute marvel, and I’m not sure why it doesn’t seem to have the gushing love in this forum that I would expect. Here’s why I like the 222, and some caveats that you might use to appropriately discount my experience:
Comparing down:
I came to the 222 from a HiCap-202-ND5xs2 configuration. Compared to that, the 222 has given me much, much better sound quality (significantly superior disaggregation of complicated music, e.g.) and much better user experience (more stable) and superior real estate ergonomics (1 instead of 3 boxes). However regarding sound quality, you should know that I also moved my system across the room when I did the 222 switch over, so it’s not exactly apples to apples. That said, there are ways that the 222 beats the prior sources, for example in that disaggregation of musical complexity, that I don’t think would be highly impacted by the room. But I could be wrong.
Comparing up:
I listened in a dealer’s room to an NPX300-222-250NC and then listened to a 300-300-333-332-350-350, into some Wilson Audio loudspeakers. The 300-series system sounded better, to my ear … but it was close, especially when the dB level was kept constant. And the 300-series seemed better to me in ways that might tie back more to the amps, such as speed, edge-of-note definition, bass control, etc. I am sure that the 333-332 combination beats the 222, I just didn’t hear enough to make me think that the 333-332 should my next upgrade. The 350s, on the other hand, are definitely at the top of the upgrade list (assuming that I stay in the Naim ecosystem), and an NPX300 to feed the 222 might be #2 on that list.
Of course, this is just my experience, my ears, two specific rooms, etc.. There are certainly a number of people here on the forum who would tell you to sell a kidney to upgrade to 300-series sources. As always, you should listen for yourself and make your own decisions!

