Quest for Rim Brake Rims: Carbon or Alloy?

[Flinch]

Gonna do up another wheelset on decent hubs (White), and am wrestling with which rims. Here's the requirements scoop:

- Not racing, just ridin' around
- Rim brake 700c, tubeless hooked, 24h/20h
- Really-really prefer 45-50mm rim depth, outer ~ 25mm, inner 18+mm

So far I can find cheap AliExpress carbon rims (shudder) that meet the specs, but on the alloy side...crickets... I've laced up some DT Swiss R511 wheels for another bike, 35mm depth, and they're OK looking. But want more eye candy, er, 'optical functionality', yeh, that's the term.

So, anyone know of a decent carbon brand that meets the specs?
If not, alloy? Don't want the HED rims that have the floppy inserts, by the way.