Hello from golowesstamps. The new Express Checkout is a GREAT feature and works well! I have a small suggestion on the subject of the login.php page. Many people are not members of PayPal and do not wish to be one. The readings I see posted in this area of the forum suggest that one not use both the EXPRESS and the IPN modules. If you use only the EXPRESS module that cuts out anyone who is NOT a member of PayPal from making purchases as you have to be a member OR become a member to use it. THUS I installed both the modules.
Then I modified the INCLUDES/LANGUAGES/ENGLISH/LOGIN.PHP file on line 19 by adding in "Use PayPal WITHOUT becoming or being a member OF PayPal" so that customers know they have other options once they become a member of MY website. Being a verified and premier PayPal member I can accept payments from anyone via PayPal whether they are a member or not. Also that gives you the benefit of currency conversion from practically anywhere in the world.
Hope this bit of info helps someone along the way.