I would not trade down from a 282 to a 272.
282 is a good enough to be the end game preamp.
272 - is also very good, but still I would never downgrade from 282
If I had a 272 with XPS DR I would not upgrade to 282/HCDR either, it’s not really worth all the hassle.
to really improve in a big way on both, I would look for a 252 Supercap DR
at this level though rather than think about 1 or 2 hicaps, the source is where real musical gains and satisfaction are obtained for me.
I’ve tested this many times, even with a good home cinema amplifier, upgrading the source is for me, the real game changer.
What I mean is compared the Yamaha Home cinemas internal DAC, playing movies through Naim DAC V1 made the amplifier into another league, and I enjoyed sounds and music that I did not think possible.
Bass went much deeper with superb articulation from the Naim source, also musicality, clarity, everything went up, as if I was listening to a Home Cinema amp which was top of the range and cost 4 figures
to my ears this - source first - applies all the way from Nait 5 to 552/500.
I use another good (not Naim) DAC for watching TV, but for special movies, I use my Chord Mojo, and wow, what an uplift, same amplifier, same speakers, different source, and such a big musical difference to my ears