I've currently got a single 1920x1080 Dell U2414H hooked up to my 2012 Mac Mini 2.3 i7. I'm looking at getting a second monitor, and curious what everyone recommends in terms of a suitable resolution. I'm hearing that one 2560x1440 monitor runs quite well, but two (thunderbolt) monitors at that resolution starts to lag. Would I be pushing it to get good performance with a 2560x1440 + 1920x1080? I like to have the second monitor there for added real estate plus native 1080p is good for movies/tv and xbox. Should I go for a 1920x1200 for the main monitor or even just stick to a matching 1920x1080? Thanks in advance.