it seems to me that the 510 is less of a hassle than the kr808d-1 with the carts and atty's being separate. Wouldn't it make sense for cleaning? That's why I bought the 510.
I think the opposite is true. The 510 is MORE of a hassle than the KR8 because the carts and atty's are separate. You don't actually have to clean anything with the KR8. You can, but it's not necessary.