I'm planning to replace an aging Mitsubishi CRT with either the NEC PA241W-SV or the PA271. Other than size of panel, are there any other differences in ease of calibration, hardware, or image quality (including consistency of panels, and QC) between the 24 and 27 inch models?? Also, in the US, is there any difference in panel quality between the SV bundled package vs. a stand-alone monitor?? Thanks.