What To Use To Build A Particular Type Of Site

I'm planning to build a particular site, and am looking for suggestions as to what to use to create it. I'm pretty good at working with Wordpress, but to use anything else I'd need to outsource the work.

What I'd like to do is create a site for people to review widgets. The manufacturer of a particular widget will have a page on the site, where he can describe his widget. He can then invite people who have used his widget to log in and add their reviews of his widget. The idea is that he can refer future users of his widget to this site, for them to get honest feedback on the item from people who have already used it.

That's the basic idea, without going into detail about the widget itself. Does that make sense?

I'm thinking at it's most basic form, I could do this with Wordpress and either have the individual widget pages on subdomains, or use wordpress mu. That'd be easy for the manufacturer to log into and add content to.

My expectation is that there will be many manufacturers of widgets looking to have pages on this site, so it needs to be easy to expand, and it also needs to be user friendly to make it simple and convenient for widget users to add their feedback. If it's too difficult for the widget user, then they may not take the time to do so.

I'm just wondering if there's a better way of doing this than using Wordpress. The issue isn't whether or not there's a demand for this type of widget review site, or what the widget is, but more how to best create the type of site I'm after.

Any suggestions very much appreciated.

Thanks

Audrey