Deciding between two DT swiss aluminium rims

[robertbb]

Analysis paralysis, help needed.

I've got some DT 350 Centrelock hubs (28h/28h) and looking for a tubeless DT rim to use with them.

(Yes I know there's Easton, and Hed, and Kinlin, and, and, and... so please don't go there. I am looking at DT swiss rims because I can get them far more easily).

My riding is 65% paved tarmac, 35% smooth champagne gravel (think rail trails) and the very occasional rougher gravel section.

I weigh 70kg, the bike would vary between 8-11kg depending on load carried.

DT RR421: Assymetric. 20mm internal. 24mm external. 21mm height.
DT RR481: Symmetric. 22mm internal. 26mm external. 25mm height.

Smallest tyre I will run will be a 30mm. Largest will be a 35-38mm. Though there mayyyy be a chance I will ride a 40-42 in the future (currently no bike in my stable with clearance for that).

Which rim and why? Granted the RR481 has slightly more modern dimensions but would the RR421 build into a better wheel considering the asymmetric profile?

Bonus question: DT aerolites x28. Sufficient? I went with the extra 4 holes per hub after reading something from November Dave (and others similar) basically saying never rely on spoke gauge to do what spoke count should be doing. I think for my weight and riding style, something like an Aero Comp would be overkill but open to suggestions (e.g. Aero Comp rear drive side? Does this depend on which rim I choose?)

Thanks!