i use up to 3 monitors .. once a mix is set up i hate re sizing / moving stuff ... 1 x 72 cm center monitor ( main daw ) , 1 x 55 cm ( midas m32 mixer ) 1 x 45 cm off to the left side for plug ins and pop ups.
I like the Samsung range personally but i got an el cheapo Bauhn 72 cm and its fine.