I'm wondering whether I should get an Asus PB278Q monitor, which is a 60Hz IPS, has a 2560x1440(WQHD) display for only $699, or the Asus PB287Q which will be coming out in June, which is a 60Hz TN, and has a 3840x2160(UHD) 4K display for $799. Sure, there's the 4K IPS PQ321Q but it's $3000 more, which is way out of my budget. Is there really a difference in image quality between WQHD and UHD resolution? Is a good IPS WQHD monitor better than a budget UHD monitor? If possible, also upload image comparisons between the two resolution. Thanks.