Clive - I think the Andrews one is the same as the Bintel- its just that the andrews picture shows the eyepiece holder screwed off to reveal the t-thread adapter. Still - a 4 element coma corrector for $149 is amazing value. I'd love to give one a 'road test' at least for visual purposes.
http://www.bintel.com.au/Astrophotog...oductview.aspx