...If you want something that performs well forget the DT Swiss narrow rim but go for a 25mm wide rim (or wider), it will be as aerodynamic and give all the benefits of a wider rim.
Naturally you do have independent & reliable data ( read : not coming from Zipp or Enve ) which can confirm this - so wrong - theory ?
I didn't found yet ANY RELIABLE test which could confirm "miraculous" aero properties of " U shaped- wide " rims. None. Zero. Niente.
And from some reason European manufacturers still ( having R&D budget bigger than Zipp & Enve annual sale together ) still stick to 15mm , v-shaped. Do you REALLY believe they don't have € / technology / know-how …. to make u-shaped or wide ???
Talk with aerodynamicist. REAL one. Not connected to wheel manufacturers. That will open your eyes.
However I have to agree with you - replacing "open mold" Chinese rim in case of crash / damage is waay easier and cheaper.
Quality of some
Chinese manufacturers rims is VERY close ( I mean really very very ) to some "reputable" brands, so for today do not see reason to build smth on nice hubs.
Next factor is price : 900€ for Chineese vs 1100€ for Corima / DT Swiss f.e.
BTW DTSwiss & tubular can not best idea : internal nipples. Clincher- no problem here.
If I will not have nice hubs for funny money and have to make decision today , and it must be clincher : Corima, Vision, DT . In this order.
For "budget" build : Novatec/ dt350+ farsports.
But paying twice as much to have wheels ( not bad at all, just waay overpriced for what it gives ) only because they are well repre$ented here ( yes , you do understood it good : companies are paying people to watch "straight line" on forums , this one is no exception , what is more than obvious ) ???
Look what certain solution gives you for the money .
Go to Heaven for the climate, Hell for the company.Mark Twain
I can be wrong, and have plenty of examples for that