I've been staying away from this thread because I didn't want to appear as if I was hocking my service via UT, but...

My server has been running AFP for several months now. AFP is a great product and very stable. I haven't tried WWC so I can't compare the 2 other than to say I have always heard good things about WWC. I have taken a look at the Visual Webbuilder product and it looks like a great tool to use with WWC, something that is definitely lacking in AFP.

AFP's strengths are its power and simplicity. I was productive in less than 10 minutes of first trying it. Its drawbacks are I feel like I've stepped backwards to the 2.x days in the way you manage a project. You can use FP and Interdev, no question about it, but it is a scripting engine. But for a large scale web based project (complexity of the app not the size or amount of the data), managing could be difficult.

Just my 2 cents.