It seems a good buy for a "premium" instrument, premium in that the quality factors you mentioned are documented to indicate a known optical performance.
F15 is quite slow, not really suited to deep sky stuff but ideal for short exposure planetary and lunar stuff. I would imagine it also has a narrow field of view so don't expect any wide sweeping views?
On various newsgroups, Intes seems to get a good rap. I think they take longer to cool down too, due to thicker optical components? If I were after an excellent planetary 'scope, without the price tag of an Apo, I would probably lean towards an Intes Mak-Cas myself.
Good luck with the pre-purchase data gathering and though processes.
Cheers
Dennis
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