> But, I will freely admit that mostly I am saying this because of a dislike

Well for the planets I think tracking is the biggest priority. At
200x and up on the planets, I'd much rather have a 4" scope on a
tracking mount than a 10" scope undriven. Compared to no tracking,
collimation and diffraction spikes are really minor annoyances to me,
since collimation takes about three minutes and the diffraction spikes
only distract me at low or medium power. Once I get past 150x or so
in my 8" Newt, they become faint enough to easily ignore.

I do think that the 33% obstruction really hurts for visual
observation of the planets though. I find it easier to see detail on
Jupiter or split doubles in my 8" Newt than in my friend's collimated
12" LX200. There's just a lack of crispness there and it's due to
either the large CO or a poor primary mirror, and the latter is
unlikely. I'm sure it's fine for imaging though. It's also nice to
be able to sit down and observe with the SCT in the observatory. With
larger Newts you have to stand or perhaps even climb a ladder!

Ritesh