Pros: It's fitted for you, so... there are a lot of pros
Cons: None really besides the cost. Mine cost $420
There isn't much to say that's negative about these putters besides the cost. The fitting is free, but if you want it with an insert, it costs $420.
The fitting took me about an hour, but it was worth it. I love mine. I highly doubt I ever buy another putter, but if I did, it would be to get my current putter re-fitted, just in case something changes in my stroke mechanics at some point down the road.
I love the distance and direction control with it. It's almost perfectly molded to my natural stroke.
No two Edel Putters are the same, so if you are looking for a putter soul mate, Edel Golf is a good place to go.