Ain't gonna say who's best... I will tell ya what I use the most of. Tamiya.
Then some Dragon, Italeri, whatever's on sale..
I don't use very many figures as they come out of the box, except drivers and such, pilots, etc; but even those guys get modified with diffent heads, arms, etc..
After I build a figure, I couldn't tell you with any certainty what figures were used in the construction, unless I'm taking notes.. Usually I open a box and just start cutting arms, legs, torsos, and gear off the sprues, then throwing them all in their respective bins...