Upgrade from Naim nac 122x to nac 202. Worth it?

Hi. I,m currently running a CAL transport into a Bryston Bda1 dac. This is feeding a Naim Nac 122x preamp Nap 150x amp powering PMC Gbi speakers. I recently latched on to a Hicap power supply and could hear the difference over my flatcap 2x power supply. I love the sound but have to wonder, how much more magic could a Nac 202 bring to the party, and what about the Nap 200? Are they worth the extra money?