There are pluses and minuses that is for sure. The dry sump is great for oil control and engine packaging as well as things like temp control, pre-oiling, pan vacuum, etc. But it is also expensive and difficult to package and complex.

I like the belt drive external oil pump since it is easy to change drive ratios and easy to pre-oil the engine. But it is also more expensive than a normal pump and requires more parts for mounting. I think the belt driven pump is a better solution than buying some of the really big and expensive cam driven pumps though. Just depends if you can fit it into your chassis or not.