Talking to the mechanic at Merlin, he said they get loads of Fulcrums back for warranty replacement/repair but hardly any Shimano.
Funny, when I was looking for a set of wheels I got told the opposite. By a mechanic at Merlin.
For what it’s worth my best road wheels are a set of Mavic Ksyrium SL’s which are just brilliant, but they should be for the money. I also have some Fulcrum 5 CX wheels for commuting and winter riding and they too have been brilliant, really tough and survived the worst I could throw at them. Fulcrums are hand finished I think, I’ve been very impressed and would buy their top end wheels now.