Ah, that's a tough one. I recently grabbed a near mint Canadian heavy Tech and a Slim adjustable in excellent condition, both are great shavers, but deep down I know that if I had to give all but one up I'd ride off into the sunset with my RED TIP!!!
Which one did you shave with?I shaved with one today. Darn thing loosened mid shave. Probably operator error. But ended up with the best shave of my life. Used a GSB.
Parker Variant - Shaves smoothly at all settings and has good grip and balance.