Alex, I had a Celestron Edge HD8 for about a year. They are f10 native and can be reduced, but the reducer was ridiculously expensive (I could have bought a Newt for the cost of that Edge reducer. ) With SCTs I have a couple of gripes, a big one being their love of condensation, they are magnets for condensation, and thus require good long dew shields, and copious amounts of front end heating to discourage it. They have a reputation for mirror shift as they traverse the sky, and honestly don't try to image across the Meridian with one. Even if you have a supposed mirror locking one, they still shift, it's frustrating. Be prepared for refocusing. They need a good mount, as all longer focal length scopes do, and guiding demands more care.
Still they have a big fan base, especially in the USA.
As we have recently discussed, a focal length of 1000mm is a sweet spot in terms of ease of use, fitness for our Seeing conditions, etc.
I should add I also owned a GSO Cassegrain 8", f12, which i found easier to live with than the Edge 8, but really it was visual only (good for splitting double and triple stars). My deteriorating vision made me give it up.
Which brings me to refractors, my final resting place in astronomy. A good refractor can do it all in my opinion, and does not usually require the collimation rituals of the various mirrored breatheran. I rest my case.
