Posted By Jarad Schiffer
I have an ETX-90 and ST-80 that I was using as my planetary and wide field scopes, respectively, but I wanted to get 1 scope that could do both. The ED-80 has the additional advantage of a very nice price point, but I was considering something like a used Genesis, Tak or Televue 78, etc. before the ED-80 came out. For quick cooldown, sharp and contrasty views at high power, and wide fields at low power, an APO is the only single scope that can do it all.
Once you get into the larger sizes, the APO starts to lose it's appeal to me except for astrophotography. My big newts have about the same setup time and weight as 6" APO on an equatorial mount, and will show more on both deep sky and planets than any 6". They do give up the wide field, but that's why I plop the 80mm down next to them.....