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Compared to a CPC9.25, a 10" dob is easier to carry, easier to cool and cheaper. You can wheel the dob around on a trolley easily provided there aren't steps to negotiate. Collimation is easy with either scope.
I prefer the observing position of an alt/az mounted cassegrain (such as the CPC) but most are happy with dobs. Some type of electronic aid for finding objects is highly recommended for the dob.
The greatest disadvantage of the CPC9.25 is getting the ota cooled with falling night time temperatures - unless the scope is close to ambient temperature the images will suffer greatly.
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