I also like the Panaracer Pasela TG tyres, I have done over 5,000 miles on them and I can't recall once getting a puncture. I've had the 700 x 25s on my Audax bike and also the 26 x 1.75 on and off and on again with my RST - several times.
I have just switched the tyres on the Audax to Continental Grand Prix 4 Season tyres; I would have been happy to get Paselas again but there was a good deal on the Contis and they are 100g lighter each, so I thought I'd give them a try.
Also I have just put the Paselas back on the RST, I've been swayed from time to time by comments/reviews about the Paselas and put the Marathon Supremes on thinking they will be tougher and more reliable, but since the Paselas are definitely more comfortable and they haven't ever let me down I will go with what suits me.
Your Audax is a great looking bike Doug, and I hope the next 20 years will be as good for you.
As a matter of interest, what did you replace the Paselas with?
Regards,
Jim