My old Cherokee, Civic and Mustang where all easy to work on.
The Saab has tons of room and so far everything has been straight forward. The Acura is mostly easy. The Infiniti was hard at first but now I know my way around it no problem. However changing a failed injector on it recently was a pain.
I've always had thsi rule that factors in my car buying. I look at a car and figure out how much time and effort it will take me to change a headlight bulb. If effort is low, I'm moe inclined to buy it, the thought being that everything else should be straightforward too.