I've used Aquatica Housings professionally since 1986. I have owned maybe 6 Aquatica Housings since then and all were built like strong and I have never had a part break while on assignment. I used a couple of Sealux Housings back in the early 2000's, but that was only because Aquatica had not yet manufactured the housing I needed for a digital camera I was using on an assignment. It's been same many times, Aquatica housings are built like tanks. I live in Canada so I have purchased my last three Aquatica housings via http://stewartsy.com who is based in Vancouver. I have never used a Nauticam housing so I cannot give a fair comparison other than I have seen them on dive trips and I'm not convinced they could handle the hard knocks my that my Aquaticas have survived. Just my 2 cents.