I mean a cheap and good mobo.and the budget? or do you mean the cheapest?
Maybe something like this?To fully utilize the 9600k you want a z390 (i think it is) and they not cheap
Check for reviews and they will say if its good or nptMaybe something like this?
Asrock Z390 Phantom Gaming 4S
It costs 105 euros in my country..But i dont know