When u r spending half money, half space, less manpower that becomes cost effective....on 2 color machines we can print 1 color, 2 color, 4 color as per requirement...lastly one need skills to print 4 color accurately on 2 color machines and than results are amazing even better than 4 colors because inks are dried properly after printing 2 colors...2 colors are mostly used to print spot or special colors other than cmyk...like floroscent, gold, silver etc....so 2 colors are best bet, in fact no use buying single colors always go for 2 colors to use it in multiple ways.

ping pong, you cannot seefinished 4 col item in 2 passes, if col is wrong ,too late! @@pingpong9005 how do yoy know 2nd pass will register, talking crap ,dont insult my intelligence, stick to table tennis

as you grow , there is no option beter than 4 col press, or are you dreaming@@pingpong9005

I would have just said a skilled printer can do it totally agree with above comment