These discussions are always interesting. In just a few posts we have Newtonians, Refractors and SCT's all claimed as the best planetary scopes.
Any comparison is like comparing apples to oranges unless the telescopes have top quality optics. A 4" APO sure will show more detail than a large Dob if the Dob mirror is a poor one. Spend a couple of thousand dollars on a premium Zambuto mirror and the comparison ends. An 8" or 10" APO would level the playing field again, but at 10 times the cost though.
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