Between the FHD LG and the AU, you definitely want to get the AU (AU Optronics B156HAN01.2), it has a higher contrast ratio by ~250, deeper/darker black level, better color accuray, and 5% wider color gamut (may look a tad more vibrant than the LG). I'm not sure of the response times though, but I imagine they are similar.I know some people on here are getting the FHD LG, but I wouldn't recommend it at all. The AU has ~1250 contrast and covers 91% sRGB. My Samsung has 880 contrast, and covers 97% of sRGB. The LG has ~1000 contrast and only 86% coverage of sRGB. Between the Samsung and LG, I don't think a contrast difference of 100 will be too perceptible, but the ability to display 11% more colors will be.According to notebookcheck.net the brightness of the LG and Samsung are tied at 300 nits and the AU is 275. My Samsung screen actually measured at 380 nits max, but I only use it at 120 though so I don't know how bright you actually need (the stock R2 screen only gets a max of 180 nits for comparison).I'm not sure where to buy new, I have bad experience buying new screens since they always just send me a compatible screen and not the exact model I want, so ebay will be your best bet in my opinion. Make sure to message every seller you're considering to make them confirm it's the actual make and model and not a compatible replacement.Here's a few results I found on ebay from the seller I got my Samsung screen from so I trust him, you still need to message him to ask for confirmation though just to be safe. (His listings will say Samsung or whatever since that's the brand of laptop the screen came out of).