I use Dreamweaver for basic HTML, tables, layouts, forms and CSS. I think its great for these because of the Design/Split view mode.
For PHP and others I use Zend.
I only descovered Zend Studio a few months ago and i'm pleased to say that it's made the PHP coding alot easier.
I've also been playing around with Zend Guard and Zend Optimizer... great products.
I've recently, based on your posts, tryed Eclipse. It's also a great product. I'm amazed its free
I'm can't point out why but I still prefer tu use Zend for PHP coding.