A new pizza place just opened this summer in Sellwood (SE Portland) called Picazzo's. They have gluten-free pizza! Check them out at:
The only downside is that you have to wait (usually 25-30 minutes), but I think it's worth it!
I just bought the 5000 direct from VitaMix. I bought the reconditoned model - which means that the base was used for demo's or at shows, but everything else is new (container, blade, etc). It cost $349, has a 7 year warranty, and no sales tax because I live in Oregon.
I asked them some questions about the professional line versus the consumer line and a shorter warranty is one thing, but also you have less speed control with the professional, because the assumption is that professional use will be to make the same thing over and over.
I actually sprang for an extra $80 for the dry grinder - which is a whole new container and blade for grinding grains. At first I thought I couldn't possibly use that, but it turns out it actually makes dough - kneading and the whole works, so I'm trying it.
The other bonus for me buying direct is that I can return it in 30 days, no questions asked for full refund and free return shipping.
I'll let you know how I like it once it actually comes.