To what use will you put the spotting scope? If for hunting, IMHO an 80mm of any brand will be too heavy. Look for a light weight 45-50mm objective lens that will fit in a back pack.
My spotting scopes are used in long range competition. I have a Leica 77 Televid zoom lens 10-60 and a Leitz with same lens and 80mm objective. Both are around 25 ounces, and will resolve bullet holes at 600 yds., WHEN CONDITIONS ARE OPTIMUM.
There are many good spotting scopes out there and the price range is around $85 to $4,000. Obviously, cheaper scopes may not deliver when you need them. You need to select carefully. And, be careful of used foreign made scopes. Most do not extend the factory warranty to a subsequent buyer. My Leitz was purchased used, and is in Germany riight now for repair at a cost of $965.