I had the same question a couple of months back! FWIW ended up with the latest P line secondhand (third but very close to new condition tbh) for 30% discount. Which seemed like a ‘good price’ as I wanted 4 gears, and other recent improvements. I didn’t want to take on a whole project. The P line is lovely (still miss my Ni edition though, probably best finish for steel framed Brompton) but there is plenty room for improvements (grips, rear triangle protector, saddle, seatpost, pedals, etc) if you want to tweak things
I had the same question a couple of months back! FWIW ended up with the latest P line secondhand (third but very close to new condition tbh) for 30% discount. Which seemed like a ‘good price’ as I wanted 4 gears, and other recent improvements. I didn’t want to take on a whole project. The P line is lovely (still miss my Ni edition though, probably best finish for steel framed Brompton) but there is plenty room for improvements (grips, rear triangle protector, saddle, seatpost, pedals, etc) if you want to tweak things