Perhaps the best slim line off axis guider is this one:
http://www.optcorp.com/starlight-xpr...is-guider.html
the best price I found was from opt.
The best guider I have found is the monochrome loadstar, the best price was from telescope express in Germany.
There are a couple of exceptional focusers you can put on your RC and on that list would be:
FLI Atlas (not to be confused with the pdf) almost the default standard.
Reginato (Italy) ... it looks good on paper anyway.
Clement compliant (USA)
Feathertouch (USA)
And last but not least, Planewave, (arguably the pick of the bunch)