I wear glasses and my eyes aren't the best. 14" SXGA+ is my favorite resolution. In the past I had a 15" UXGA screen, and that was really too fine a resolution in many cases, but I have had no trouble with 1400 X 1050 (SXGA+) on three notebooks now.
If you can deal with 1024 X 768 on a 12" notebook, you will be very happy with 1400 X 1500 on a 14". This is an important choice, though, so I don't want you to just take my advice. Do us both a favor and go down to a local store which sells a range of notebooks, and ask to look at a 14" model with SXGA+. You have to allow for adjustment-- you will adjust to many things within a day or so. Still, if you really REALLY instinctively hate it, you probably won't like it in the long run.
I have seen 14" and 15" notebooks with XGA resolution, and the pixels are just huge. It's a waste of screen space in my opinion unless your eyesight is really, really bad.
However, if you intend to do any gaming, you should remember that the fewer pixels, the higher the frame rate at your native resolution. That said, unlike lots of people, I don't find non-native-res gaming that awful on an LCD. Good luck.