I have been a huge fan of DT Swiss star ratchet over the years, the 350 is best bang for the buck. They have been the epitome of reliable and value, above average bearing life too. As mentioned the 36t stars are the sweetspot, nice enough upgrade over the stock 18t without the durability concerns or cost of the 54t.
The only beef I've heard of the rear hubs is difficulty removing the drive ring to get at the bearing for replacement, but this is a job I would leave at the shop anyways. Everything else is super easy to service at home without any specialty tools.
I also have a P321 quiet rear wheel and that thing is a real treat, not as much time on it thus far though but from what I've read the current ones seem quite reliable.