What he said... <BG>
I think the notion that the -4 is some kind of icon that is somehow purified by doing so and so is completely false and serves no good. The -4 is designed as a tandem two-seater, +- 6g, 150 to 180++ HP, MTOW 1500++ lbs. It can be built light and simple and cheap (O-320 FP prop), it can be built like an aerobatic machine (simple with injected/Ellison 180++ HP and CS prop), it can be built like a cruiser (IFR, autopilot etc etc), it can take you round the world several times, it can be used as a bush plane, or it can do everything in between.
But, no matter how it is built, you will always end up with high performance aircraft that also has the distinct iconic looks of a high performance aircraft. No other RV has this. It is like a Porsche 911, there simply is nothing else like it.