Hi elfinke
Welcome to IIS
The DOB is definitely going to be your best bang for buck, and ideal if your intended use is only Observing. Not so good for astrophotography.
My previous track record included (but not limited to)
Chinese 6" Newtonian on EQ3
SW 8" Newtonian on EQ5
Celestron 4SE (Mak goto)
C9.25 SCT on EQ5 goto
SW 6" Mak on SE6 goto mount
CPC1100 (11"SCT on goto fork arm alt az mount)
SW 10" flex DOB
Any questions?
I prefer of all, the 10" DOB (Which was the cheapest of all the above! -bar #1)