To Resize Connecting Rods or Not?

For the race engines my bother builds, having the rods spin 6K to 10k rpm for 15-20 hours of life span, the 75 dollar cost difference of a new Carrillo rod vs having them reconditioned it’s a no brainer to buy new every rebuild. Every single rod, piston, ring, pin etc has to be checked. The run out (out of round) of new valves is way more common than that of new rods…