I don't think you can get the best out of a razor in two or three shaves, though in saying that, my first shave with a 1912 was a real eye opener and I'll never be without one.
But the intriguing thing about this game is, you can agree with some people about most things and then there are things were you are poles apart. I know a few people whose opinions I respect who love the Mongoose. I had five or six shaves with one, thanks to
@Barry1963 and could not get on with it.
The Cobra is another marmite, I love it and if I could only have one modern SE that would be the one.
Anyway, enough rambling, back to the point, and shock horror, I don't think I have fallen out of love with a razor.
If I like a razor after a few shaves, I have always liked it.