I am about to commit blasphemy (although not on this forum). I have had and EON 120 for about seven years and I have used it and used it and used it!!!!!! I love that scope and it sure treated me to amazing sights and many wows. However, since I got my C8 I have really not taken out my refractor more than a handful of times. I find that I prefer the views in the C8 to the refractor . I like the views of the planets and deep space more. Sure the stars are not as tight and the diffraction ring a tad brighter but the detail on everything is much easier to see. For example m13 is absolutely jaw dropping in the c8. It's nice in the refractor as well but not comparable to the C8. Same with the m57, the double cluster, m42 etc... In wide field views, of course, the refractor wins hands down. And yes my sample of the EON is a great one. I had it tested by O.M.I. and it tested at a strehl of .96. I was told that the C8 would be about the equal of the refractor even though the C8 is much bigger but my experience (maybe it doesn't count for much because I am a low level amateur) has not been that way. I sure an 8 inch refractor would blow away the c8 but hey you can't easily get an 8 inch refractor unless you're plunking down serious $$.
Just my 2 cents