My old CRT monitor has about a dozen lines across the top. It happened before but stopped for a while. Hooked up to different computers. Still has lines. So, I'm thinking maybe a 17-19 inch LCD but know nothing about them. Is the LCD the greatest thing since sliced bread or nothing special to bother with? If a fellow should switch, what's to look for to get the most bang for the buck? Or more important, what's to stay away from?