All of my older bikes wore stock wheels and came to me with 700s except my Schwinn, and the old 3 speed. My Frejus was converted long before I got it to 700s. 27x1 1/4s on the old Schwinn for decades running cheap Kendas. I did recently put better 27” tires on that one. The recent bikes I just got are on 27s, and even had newish Kendas on 2 of them. i will leave them stock for now.

it would be fairly costly to change to 700s, so I will leave as is. I kinda lean towards originality in a hardheaded kind of way. I will say though that the 27x1 1/4 Paselas I put on the old Super Sport really changed the ride nicely. With at least those good tires (depending on your perspective) available, I would be very happy with 27s. I have Panaracers on several of my other bikes too. So don’t rule out 27s before trying tires.

I did get a truing stand for Christmas and will be switching out a hub on the used Peugeot I just got, but will be leaving it on 27s.