The Astronomik type 2 C is what I have
http://www.bintel.com.au/Astrophotog...oductview.aspx & would recommend, although there are other breeds out there that others would probably recommend over the Astronomiks's...Comes back to budget I'd say.
As to the wheel, once again Budget. I run the manual Orion wheel
http://www.bintel.com.au/Astrophotog...oductview.aspx which I am totally satisfied with. Expect to blow the budget out considerably if going motorised..