1. clean, regrease, and reboot them. i've done it multiple times and OEM axles went from clickety clackety loud and shaking the rear view mirror - to perfectly smooth and quiet.
2. Used OEM axles.
Aftermarket are trash - all of them. one might last 20,000 miles, i've seen multiple "new" "lifetime" different brands, blah blah blah blow up in under 100 miles. OEM's never do that. i've seen many aftermarket failures, I couldn't count them if i tried. I've seen a few blow up catastrophically while driving and luckily no damage but the possibility of damage was imminent with those heavy parts flailing around.
3. If wasting time, high risk of issues, and reasonable risk of catastrophic failures (which i've seen multiple times and I'm not even a shop worker/owner) is okay with you - buy whatever is easy/cheap/exchangeable/locally availble/shippable and keep swapping as needed. rockauto often has cheap axles available. buy one extra for a spare.