There is a difference but here is what I understand :
1. Lawyer are expensive and rarely specialized in every state. So they will answer the best they can and hope to get you business if you ask that question. And you may have to ask many to get a clear answer and that is very expensive.
2. Same for CPA.
So, some state have different rules and some may be advantageous for you. But, there is tax related paper work and maintenance cost every year that can cost a lot too.
There was a good BP podcast about setting entities with someone talking about Delaware trust and stuff like that. I'll try to find it. Maybe it could help you. But to keep things easy, simple, clear and straightforward when starting, it may be better to keep it local (where you invest) or where there is a CPA and/or Lawyer that you trust and knows what there talking about. Remembet that the more entities you have the more it cost not only to set up but also yearly fees associated with them.