So. Does the "one bike does all" holy grail exist? What would your pick be?

[flynrider]

To the best of my knowledge and experience they held their oil until they got some age on them ..... like 20 years, then the head gaskets would seep. None of mine ever leaked. Vibrated, blew bulbs, cracked fenders ...but never leaked.

Same here. My XS650 was oil tight, but thanks to the vibes, you never knew what part was going to fall off next. That wan't just a Yamaha problem. I had several Kaw KZ750 twins (also 360s) that claimed to have counterbalancers, but they also shed exhaust clamps, chain guards and at one point, a big piece of my sissy bar disappeared due to metal fatigue.

I was a big fan of the 360 degree twins until I took my first ride on a UJM inline 4. I kept having to check the tach to be sure the engine was actually running. After that, I never looked back.