Sven
Go to a star party or observing night and have a look at what the guys doing visual observing are using. The mix is usually 80% dobs of various sizes, 10-15% SCTs and the remainder a mix of other things.
There is a reason why dobs are preferred as a visual instrument, and you gave the one of the reasons - "aperture is king". Dobs simply give the best bang for the $$$. On top of that they are versatile, great on DSOs, good on planets. They are easy to use, easy to setup, transportable, robust.
My first scope was a 130mm newt on an EQ mount. My next was an 8" dob. The night I first used my dob i had seen more objects within an hour than I saw in 18 months with the 130mm!! You see more, they are easy to use, and when it comes to portability, I definitely preferred the dob to the 130mm.
I used to transport my 12" easily in my little Astra no issues. And the great thing about a dob (especially the smaller ones) if you want an object and it is behind a tree, you just take the tube off. move the mount, put the tube back and away you you go. If using an EQ or Go To mount, you have to redo polar aligning or star aligning ( can be a real PITA at 1am)
Anyway, it is your choice to eliminate dobs without having seen one, but I will bet New York against a brick that if you go any of the scopes you mention, in 6 months you will be either:
-offering that scope for sale
-asking for advice on which dob to buy!!
Cheers
Malcolm