Potential Relocation From East To West

I'm looking at the potential to move from Massachusetts to Arizona in the next few months; if I also intend to obtain my CDL , is there any advantage to getting my CDL then moving, or vice versa (move, then get CDL in AZ)?

I would think from a financial aspect it'd be easier to wait til you get there so your not paying twice (obtaining it, then having to pay to transfer it). In my situation I'll be moving to florida from minnesota end of this month, and i plan on getting it almost immediately

Probably much cheaper and easier to obtain in AZ than Mass, and you won't have to retake any tests if you wait.

Thank you for the replies so far; I'm leaning towards moving first myself, but wanted to make sure I'm not going to run into any snags - like needing to have an Arizona class D license for a certain length of time first, or something along those lines. I know several of the major carriers run their training academies in Phoenix, and the relatives I would be staying with only live a half-hour or less from most of them (Swift and Knight come to mind right away, and I like Knight's philosophy of no team driving with a trainer - makes a TON of sense to me), so I wouldn't need to be away from 'home' during the first phase. I still plan on attending a private school vs. company-sponsored, but having that flexibility sounds good to me.