I haven't written on here in awhile, but my favorites are all Kenmore. First is the Pregger Roto-Swirl, (I think that's right). Second is the regular Roto-Swirl, Last is the Straight-Vane agitator. I think the reason is that they all did a good job in getting your clothes clean, yet they were simple one piece agitators that didn't have parts to break in them. The DD Kenmore that I have had for 20 years now has a dual action agitator that's not bad. However, recently I had to pull it out, and replace the what you call "dog ears" which was a little inconvenient. Oh well, I think it still cleans better than some of these new ones.