Today ONLY Canada - Dell U2410 $379.99CAD

I checked the sight, and I don't see where it says it is "today only" it looks like a regular weekly sale. However have been eyeing this or the U2412M. Just can't quite decide. Both are on sale, and the difference is now $100 (including tax). Any thoughts on if the difference is worth $100. I want it for pp and printing. Wondering in the long term, which would be a better investment.

Brett