It all gets back to the basic Q. What do you really want to do?
First rule 'Aperture Wins'. A good 10" Dob will fit in the 'normal' sized car & is cheap, easy to move, collimate etc etc..... + the don't suffer from the dreaded dew problem...
To answer your question re; SCT collimation... shouldn't be nec., unless your into pics in a big way, like RR & a few others.....
The Dob can be fitted with digital setting circles/tracking platform etc., to assist in finding/photographing things. See Mike's Dob set-up.
HTH a bit.
L.
ps. check out the 'Show us your equipment' in here >
http://www.iceinspace.com.au/forum/forumdisplay.php?f=6