Hi Richard, welcome to IIS! I was actually looking at your scope when I was upgrading from a 60mm refractor; I sought some advice from Bintel's Sydney store and they encouraged an 8" dob and said it was a better scope by a country mile than the 130slt. If you need goto then Bintel stock Orion Goto Dobs for around that $1500 mark (the 10" is 1500). I don't know how good they are, but my Orion Eyepiece is very good.
But one thing: enjoy the scope you've got now to the nth degree! And getting to know the sky will come with time; I've never had goto, in fact in some respects, it's a benefit not to!
Enjoy the sky...I saw the best view of Saturn early this morning that I've ever seen, you never know which night is going to be THE night!
