I said 4-7 although it may be more.
As for favourite Manufacturers Id say:
Young Miniatures - Busts
Alpine Miniatures - 1-35th scale figures
Latorre Models - Anything he does
Pegaso - 75mm Figs
Although, to me the manufacturer is not all that important, as what matters to me is the sculptor. Sure the different casting quality matters as well, but if you have a well sculpted figure to work with the casting can be fixed.
Sculptors like Andrea Jula, Taesung Harmms, Young B Song, Latorre, Adriano Laruccia, Maurizio Bruno etc are all so inspirational, which makes me buy their figures.