Hi - you'll be able to "see" more with the 10" scope (bigger mirror/aperture, greater light collecting capacity - 50% plus more than the 8")
The reason the 8" is more expensive is because it's on an equatorial mount: I can't comment on the quality of this particular one, though I'm sure some IIS members have used/owned them.
The 10" scope is a "dob mount" type, which is very easy to use for beginners, a point and view type (easier to get used to than an EQ mount, particularly for reflectors.)
They (dobs) are more limited when it comes to imaging and tracking, but are really the ideal combo of mount and scope for the starter - many of us older hands swear by them too, and often have both dob and EQ mount scopes as our spending increases!
Cheers, Darryl.
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