I have spent the past few years using both spinning and casting reels for spoon chucking, they both have their pros and cons. If I had to choose only one, it would be a spinning setup.
Using a casting reel, it is easy to chuck small spoons and spinners as long as there is no wind, throw in a 7k wind and its birds nests all day. Nothing will make you hate fishing more than watching your buddies smash fish while you are constantly picking birds nests out of your reel. IMO a casting reel is perfect if you are only using 1/4oz spoons or bigger, anything smaller and it becomes a problem if there is wind.
A spinning reel is perfect for all conditions, tiny spinners and spoons in the wind, no problem. Big spoons in big water, no problem. I find it very accurate, and it's little to no effort to cast. The only negative that I found was I find it hard to float fish with. So I carry my float..
tight lines.