Don't expect to see the colours and super high resolution stuff that you see in photographs... Not gonna happen. However, a 10" will show excellent views of the moon, many star clusters and especially globulars.
I saw Saturn first through a 60mm alt-az refractor and have been hooked for 40 years. Through a 10 inch, much nicer. As previously posted, the frequency of repositioning is proportional to the magnification. Not really a big issue and you can let an object drift into view for a longer look-see.
My first big scope was 12inch f4.5 and I loved the thing to death.
In short GO FOR IT!
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