had both chinese and fancy rims on the MTB (nextie and duke).
the dukes are a lot lighter, but the nextie rims was quite some time back … the duke set was build for my (more precious) Scott Spark, the nexties for a cannondale FSi hardtail. Both build myself, not a big (not really noticable) difference in performance, only weight on the scale and the duke rear hub has a very nice ratchet. (hope pro 4 on the other set).
For the road bike, I decided to go chinese again, distributed by a local wheel builder (ordered the parts with some discount 
and build myself again).
Rims are eiecarbon 23mm internal, 50mm deep, closed rim bed:
(erase hubs, 24 sapim cxray spokes, brass nipples, total weight: 1360 g)
very nice wheels, the internal width helps a lot with low pressure, tubeless, and comfort on 28mm tires, maybe I’ll try 30 mm next time, tubeless has also been flawless (with the correct sealant… the tires where to poreus for barkeeper sealant, but orange seal works very good).
For a custom set, I really like the amount of options you have:
- 3 weight/strenght versions
- 18-32 holes
- hole type, standard, internal, closed rimbed
- carbon weave outer layer
- finish (gloss/matte)
- with or without decals
you can really tune your custom set for you own needs with rims like this