If you've been thinking about paying hundreds of dollars for EllisLab's ExpressionEngine instead of going with WordPress' open source script, think again!WordPress 2.8.1 is WAY BETTER than ExpressionEngine 1.6.3, on almost every front — if not all of them, period.Both WP and WP MU (multi-user) are entirely free and open source so you can't go wrong, pricewise. ExpressionEngine does have a free version but it looks severely handicaped compared to the paid versions. Not that there's something wrong with that but WP is free and that's a huge fact to consider.
Then, working in WP is just totally awesome. The interface just flows!
In ExpressionEngine, it feels weird from the first click. It looks unfinished and oddly designed. For instance, the entry fields are extremely large, which makes entering data somewhat tiresome (because it's so large).
I could go on like this for hours on end but suffice it to say that although EllisLab had a winner a few years back, their current ExpressionEngine is no match for WordPress, themewise, pluginwise, pricewise and... pleasurewise.
WordPress is rock solid and used by millions of web publishers.So if you absolutely need to waste some time and check out ExpressionEngine by yourself, be my guest but unless you're a hardcore EE fan, you'll probably be wasting your time more than anything else.