recommend me a wheelset for my cross bike

i am thinking of upgrading some of the componants on my cross bike and first up is the wheels
i probably use it 75% on road and 25% off road

thanks

Campagnolo Proton

open pro on ultegra 😉

Mavic Askiums.

Open Pro on any Shimano hub, with DT Rev DB spokes.

handbuilt somethings

what firestarter said + tied and soldered………
and if you’re not a bloater 28 spokes.

It depends on your budget.
Mavic Aksium to Kysrium are all worth their money.
As an alternative you could have some handbuilt with either Hope non-disc or, if you have the money, Royce hubs. On Mavic Open Pro.

With two sets of wheels you can keep cross tyres on one and road tyres on the other and just swap wheels as required. This way you can also have a different block ratio on each if wanted.