There are a lot of threads here on this. Search around. I have an X1 that most here will tell you doesn't do well with ambient light but I use mine all the time with late afternoon daylight and sometimes with small lights on in the room. Direct light is a killer and will completely wash out the screen. Check out the 260K - that is the one many others here have recommended when your question comes up. The real question is: How much ambient light?