EIFFEL  OK for amateurs, but buggy, as long as you're happy with your stock design layouts (you will not be able to change them by the way).

Pointless for web designers - too restrictive/difficult to get inside. Bugs hurt too, and add ons/upgrades all cost money.

One last thing: Come on - if you claim to be a web designer and use this product for clients be honest: you're a hack and they should be doing the website for themselves for 1/10 the price.  
(Version 4.2.2)