Before relaying my personal experience with these scopes, here's a review (Posted yesterday) by Ed Ting. If you're unfamiliar with Mr. Ting, he is one of the most objective of all the YouTubers when it comes to equipment reviews. I've been a subscriber for a long time and am sure you will be too after watching his review of the 100ED.
https://youtu.be/ReEIH8OTI3A
As Ed points out, the only "weak link" is the focuser. His comments about adjusting them is spot on... The two push-pull allen screws work very well to smooth out and increase the holding tension. I've done the same thing with my grab-n-go version. However, for the two (100mm & 80mm) that I use for solar imaging I swapped out the focusers simply to hold the added weight of the Quark and the cooled cam. Here's a pic of the 80ED with a 2.5" Moonlite...
I'll mention here that both the 80ED & 100ED have the same diameter tube. Thus, the same focusers fit either version.
Performance of the ED glass matches, or out performs, my other two ED scopes... both Vixen brand. The day my
At
Both versions come with an 8" Vixen-style dovetail. That's fine for visual, but a longer dovetail is necessary for
In closing, if one is looking for some ED glass for visual or imaging, the Skywatcher Evostar scopes give plenty of bang-for-the-buck and will match, or out perform, scopes that cost twice that much. I recommend them highly.
Clear Skies & Stay Safe