Greaseable upper ball joints vs sealed?

[eternal21]

Need to replace the uppers, and I ran across these:

http://www.autopartswarehouse.com/sku/Isuzu/VehiCROSS/Mevotech/Ball_Joint/2000/Base/6_Cyl_3-dot-5L/MEMK90685.html

Anyone have any experience with them?

[LittleBeast]

I have had both, I prefer the grease-able ones