I agree with you totally, tsklonaut. TXP 320 is in a league of its own. I was sleeping when Kodak discontinued both 125 Plus-X and TXP 320 in 120 format.
TXP 320 sheets and the 160 and 400 Portras are Kodak's best still -manufactured products. These are like Gold as far as I am concerned. Stockpile it now like crazy - 35mm, rolls, sheet sizes to 8x10.
Everything else they have you can get as good - if not better with Fuji and Ilford - but not for long.