Suz
Nice to see you here and welcome to IIS. There is nothing like that first look through a big Dob. Are you thinking in that direction? And how big do you consider "big"?
An 8" dob was what was once considered a big scope and can see lots of objects especially in a dark sky. Easy to setup, portable, inexpensive. Going bigger to 10" or 12" the costs go up a bit and portability becomes more of an issue, but you retain ease of setup and can see lots more.
Over 12" you are getting into serious aperture with lots of decisions to be made.
Anyway, let us know how you go in your astro journey!!
Malcolm