If you have no immediate plans to print, a lower end "high end" monitor like the two you mentioned are fine. You'll never really see that issue you mentioned. Your first priority is to learn Photoshop, which won't happen overnight, so, do that, and consider your options in a year or two. Do learn to calibrate that monitor, though.
Edit: if you think it's wasteful to just buy a monitor for a few years work, and discard it for a better one down the line, don't despair, because you'll find it's much better to do editing with two monitors. The second can be used for your workspace tools and palettes in Photoshop, getting them away from your image.