I have both. I listened to a couple of CDs from the solo set, they are excellent. I have listened to only the first CD of the duo / solo set, and it's a nice one as well, very lyrical. The balance between instruments is not perfect - the reeds are upfront and too harsh-sounding at times, bass a bit recessed and sounding quite shallow as if it's a cello. Please note that the last (and the longest) CD of the 3-CD set is solo by the bassist, Motoharu Yoshizawa.
For Takagi, there is a very nice release on NoBusiness: https://nobusinessrecords.com/mototeru-takagi-live-at-little-john,-yokohama-1999.html