They both have pretty good reviews and very similar Specs. I have used Acer for monitors before and have not been disappointed. However, the Hannspree has gotten good reviews and it's $20 cheaper for the moment (plus free shipping)
So the cost of the Acers over the Hannsprees is $20x3 + $9x3 = $87
Both are LED backlit, Both have 5ms response times, the Hannspree doesn't have HDMI, but I will need an active adapter for the third monitor anyway, which could be HDMI or DVI, so.... Opinions? Advice?