Higher the resolution, crisper is the text making it hard to read which thereby causes strain to the eyes.. The first thing you should do after getting a big screen LCD is, increase the DPI setting so as to make texts look larger.. Some might suggest you to lower the resolution but it hinders in providing the maximum possible desktop area for work.. Now, a monitor for your kind of work might require some serious investment.. If you've no cash worries then I'll recommend you to consider getting either the HP LP2475W or the Dell U2410.. Both of those monitors use IPS panels which are far superior in color production compared to the TN panels found on budget monitors.. In case you do not have that much cash, i'd recommend you getting the Dell G2410.. It may not be a looker but has some of the best color productions I've ever witnessed from a TN panel..
Well, all TN panel monitors are almost same with picture quality.. So it mostly comes down to the design and features.. The Samsung XL2370 might not be sporting the best of the features but has a great design and some excellent color metrics.. My personal favorite is the Dell G2410 though but it falls short in front of the Samsung's great design.. Here's a review to help you out -