4 way for me, in my speakers of choice.

But the old adage of a good 3 way always being better than a good 2 way has a lot going for it.

I've never heard a 1 way I could tolerate, apart from full range electrostatics but that's a different set of principles anyway - the frequency response of a single cone driver seems to go all over the place when asked to cover so many octaves (cone breakup resonances?) and it ends up terminally coloured, imo.
Personally I think Tannoy DC drivers suffer from that as well.