I have both a 10 inch gso dob, and an Orion ED80.
The ED80 gets very little use from my suburban light polluted home location as it just doesnt collect enough light to be able to get enough magnification to punch through the light pollution.
After being accustomed to the views I got with the dob, I was dissapointed with what the ED80 could do for me. Its strengths are in wide field viewing and in a dark sky location I would no doubt get more use from it.
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