I have a few classics, Big Guy, some Steel Eagles, Mosmatics and Sirocco surface cleaners and prefer them over the Hammerheads, and whirl a way units. Seems like these brand swivels last longer but that could just be me. Have not tried the Hydrotek surface cleaners but have heard that they are good like the Silver Eagle surface cleaners, just have not tried them yet.
Thanks for the info Mark.
I have seen a few hydrotek surface cleaners sold used through the different bbs's, maybe those are some of the reasons for people selling them.