I haven't used a SCT (C11) for a few years now, but if the Lumicon easy guider uses the same reducer lens as in the old GEG, I'd be reluctant making the purchase. I was never able to obtain pinpoint stars, unlike the f/6.3 Celestron reducer.
I found imaging with the f/6.3 reducer and Celestron off axis guider with the associated vignetting to be a far better option.
Regards
Steven
http://users.westconnect.com.au/~sjastro/small