Hi Rastis 10" is a good choice , you will be able to see spiral structure in some of the bigger and brighter spiral Galaxies . Jupiter is a great sight and a 10" will show you a wealth of deatail some nights will be better than others depending on seeing conditions.
Saturn is also a splended sight in a scope of this aperture and lets not forget the Mars opposition coming up next month. Now at this aperture Globular clusters also are a splendid sight. Rastis with a 10" dob you could spend the rest of your life exploring the Universe ! that is until aperture fever set in .
Good luck with your purchase !
Louie
