>>57256767-wide is my preferred scale, at least when building SUVs and trucks. Give it a shot sometime, though you'll certainly have to get comfortable with offsets.
>>5725725 The problem I have with those seats is that not only do they raise your fig by a plate (which can screw up design dimensions) but they also take up a lot of room due to the back of the chair. I just sit my figs directly on the jumper plates, taking care of both those issues. Sure the interior might look a little bare, but that can be overcome to some degree. Plus functionality is a bit more important than aesthetics in this case (imo). 