Commonly used pixel sizes for webpages and their pros/cons

Question

What are the most commonly used pixel sizes (primarily widths) and what are there advantages and disadvantages?

How can I best find a happy medium to give a good exp

Answer 1

In general, for a fixed-width website, that is meant to be read on a computer screen, nowadays, I'd say around 1000px (because there's no 800*600 resolution anymore and the least you can find is 1024*768).

You should really aim for an extensible design (generally harder to do though).