Started with PT hubs over 10 years ago. Currently have 4 wheels with an SL+, a G3, and a couple GS’s (which I bought when they went on clearance for $299, basically the same price as a quality rear hub). The early hubs were heavy, but the G3 and GS don’t add much weight.
I’ve had the bearings replaced in the SL+ once, had a battery holder replaced, and no other issues in over 80k miles. I wouldn’t hesitate to get another PT hub, particularly if I was trying to go cheap/used.
All that said, I’d go crank based if I started over today. Crank-based meters have gotten much better and more reasonably priced. I’ve got a crank-based meter on my MTB. When I buy a road or gravel bike with disc brakes, I’ll go crank based.
Any I still can’t kill mine (seeing my post from 2.5 years ago)… I still have a road race bike and TT bike with rim brakes and I’ll rock the GS hubs until they die. Shout out to Zipp 404 firescrest wheels also that both these powertap hubs are laced into. 10’s of thousands of miles in all conditions. I put new spokes on one rear when they were making some noise, but haven’t even trued them other than that. They have been used for gravel racing/riding, a little single track, and just about every other abuse you can put a road wheel through. Tough rims and tough powertap hubs (and DT swiss 240’s up front).
Saris and then SRAM killed the market potential for PT hubs by not developing a disc brake version in time…the original disc brake hubs were QR IIRC and worked on very few bikes. By the time they developed a 12x142 hub, too many users had switched to crank or pedal based PM’s.
The irony is that developing a proper disc brake hub would have eliminated the biggest complaint about PT hubs…having to buy multiple hubs for multiple wheelsets. Once disc brake wheels became the standard, far fewer people stopped switching between race and training wheels and just started riding their carbon wheels 24/7.
Between my wife and I we have 2x G3 Hubs and 1x “Pro+” Hub still seemingly working fine, they have definitely been the easiest to work with. We both use Kickr trainers so the wheels mostly collect dust (do most of our training inside) until it gets warm and we put some longer outdoor rides in.
Our bikes are mostly older with Rim brakes and we never invested in PT race wheels, which made their future for us a little limited (we do have some disc covers for suitable races). Still, we ended up putting a mix of Quarq, Power2Max and Assioma pedals on our bikes to “solve” the race vs training coverage problem.
That’s possibly another factor to the PT hub became extinct. The proliferation of wheel-off trainers made PT hubs useless for indoor training in most circumstances. While many of the smart trainers have powermeters built in, they are not typically as accurate as a crank or hub based unit. I run smart rollers for my indoor training and zwifting, so the powertap hub lives on…