Yeah, run Beta1. I have run Beta2 and am now on Beta3, and I can tell you that there is no benefit and only headaches going past Beta1 right now. Remember, when it comes to Beta software, the latest is not always the greatest.
I have also run Beta4, and while it ranks high for "cool" factor, it makes Beta1 look like a finished product.
Run Beta1 and be happy! Something new will come in a few months I'm sure.