I also find 1:43 a bit on the large side, but as there's very little choice for 1:50(ish) civilian vehicles, so currently I'm stuck with larger (but far cheaper) ones.
I've had to give up on 1/43 because:
(a) they're too big to my eyes (subjective, and let's ignore the horrifically out-of-scale building I'm perfectly happy to use)
(b) my wife thinks they look like toys (bearable, she thinks the whole hobby is daft so what's new?)
(c) my 3 year olds think they look like toys.
This is the killer. Whilst I have bought them off with airfix soldiers to spare my figures, a toy car is a toy car...
Whilst 3D printing tech may still not be the finished article, when someone like Tim offers to design all sorts of random things then it really opens up the possibilities. eg anyone else up for a 1/50 Merkava IV LIC??!