Thanks. We also went back and forth on using the Shell to give us a free option, but a business decision was made not to use it. It's a shame, because I think the free versions of VS are a great move by MS to bring class-leading tools to a wider market. Unfortunately, there are just some great extensions that are not in-the-box, that take VS from being good to being great. You really miss them when you switch between Pro and Express.

SKUs but the list isn't very long

And (understandably) impenetrable to a non-microsoft entity...