We just switched to a HE top loader a few months ago. I think it does just fine. I think that the conventional works better in some ways - I feel like sometimes they work better for getting stains out and such, but I have figured out to adjust the wash settings if I have a particularly soiled load. I do like the HE top loader for other things, like washing giant stuffed animals
We got a large capacity one since we have a large family. Since there is no center agitator, I can get the giant stuffed animals washed, no problem
Also, since we have a larger capacity one, I get more laundry done in a shorter amount of time. That's pretty awesome!