http://www.dx.com/p/capf-sj-220-wate...6#.U8aH8ctZQm9
I picked up this one a few months ago and its been great. Clear picture, guide lines, metal body and very solid. Plus for the price I could order two and always have one as backup. The install is pretty easy after you initially run the wires to the HU. The only down side is that it honestly takes two months to get it..but shipping is free so can't complain to much.
Edits:
Heres another, similar construction, since the one I ordered is sold out.
http://www.dx.com/p/eagleyes-ec-th10...5#.U8aWiMtZQm8