What is everyone's engine design preference?

[DavidBoren]

What type or design of engine do you prefer, and why?

Inline six because they are smooth and balanced?

Undersquare for n/a efficiency and torque, versus oversquare for boost and high rpm's?

V8 for that all American thumpy idle, or V6 for the packaging?

What engine type do you prefer, and why?

Also, is there a particular design that is better suited for road racing/pro touring? I know that transmission choice and gearing can be tailored to keep any design of motor in its optimum operating range, but is there a good reason to choose a high revving, oversquare, turbo motor over an undersquare stroker with a positive displacement blower?