Two years ago I did an extensive shootout with my C102F (AMAZING optics!), an ETX125, my C6 SCT, a 1974 C8 with superb optics, and a Questar 3.5.
I used the same eyepieces, and spent a LOT of time comparing Mars, Jupiter, and Saturn.
My background: been observing since early 1970's and have used/had many many scopes. I didn't just buy and flip em. I really USED them.
My biggest interest was between the C102F flourite and my C6.
I could go on and on and and on about my experiences, but I'll just throw my results out there. Let me start by saying that during excellent seeing the C8 won handily. The issue was that those moments were few and far between. The Questar ALWAYS lost and NEVER got close to any of the larger scopes. Nothing magic there - except whole thing was cool to use and just look at!
In the end, my C6 was the clear winner. Yes, the C102F had great contrast, but the C6 was still pretty good. My goal was to see and draw details. I could see more details for me to draw and keep track of night after night. The ETX125 came very close to the C102F and there were times that it was better. The problem was that the ETX had issues with focusing and needed something electric. It also needed to be deforked as the mount was complete junk. I was always amazed how excellent the OTA was and how terrible the mount was - from the same company!
I ended up selling off the C102F, the ETX, Questar, and the C8 to buy a C11 GPS. I'm thrilled with the 11, it's great for deep sky (as well as planets too!!!)
So now I use my lowly C6 SCT for planetary work, and the 11 when the seeing is excellent (not very often with the planets so low). The portability of the one-armed mount is great and works perfectly with my portable lithium battery. Really is a killer planetary setup for me.
I mean no dis-respect to you refractor lovers out there!! Perfect round stars and black backgrounds RULE!