uniballs have a bad rap on here.
They're easy to clean, and very strong. When they need replacement, they're only $45, and can be done quickly and easily.

If you don't spray anything on them that will destroy the teflon lining, they will last a very long time. The problem is that people hear a noise and spray WD40 on them, and the lining is ruined immediately. People constantly recommend spraying WD40 on anything suspension related that's squeaking, and it's bad advice.

I've got 3 years including 3 hard winters on my current set. I wash them with the rest of the truck, drip some tri-flo on the top, and they're good to go. Mine are silent, and they look like new.

I've used the wrong lube on some before, and they were destroyed. Hard lesson. But it was my fault, not the uniballs.