Hey Tony,
This'll be "in addition to".
I know a fair number of the AT 6" have been sold in the last year or so. I've seen no proper review of one, but I haven't seen many crop up used either. If a new scope is duff, regardless of reviews, you normally find a bunch of them for sale within a few months.
I'll fork out the $$ if I HAVE to, but I'd rather spend less than more if there is only a minor difference in IQ.
Peter
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