Wow, thanks for posting the pics, Dukhat
! I especially like the USS Trieste NCC-3724. Some kind of communications control ship, or maybe meant for long-range scanning and imaging? Or are those weapon turrets? Those windows and nacelles suggest a ship far larger than the Miranda-class the model started life as.
I love those old DS9 kitbashes, they remind me of the Federation ships in the old DC comics Trek series I read growing up. It's cool to see such interesting variations in ship design.