Flooding usually happens after a poor inspection of the housing tht may be because part are coming loose or o ring problems
Aluminium housing can go deeper but I hve canon plastic housings for over 6 years and never had a single problem
I didn't buy the recsea because of the metal but because it makes me access all functions and I cn re use my inon AD lenses
However if I had to go plastic I would not spend more money for an ikelite for example unless I had 67 mm lens as that housing also does not access all functions
I don't buy a housing thinking of flooding it!!!
Aluminium housing can go deeper but I hve canon plastic housings for over 6 years and never had a single problem
I didn't buy the recsea because of the metal but because it makes me access all functions and I cn re use my inon AD lenses
However if I had to go plastic I would not spend more money for an ikelite for example unless I had 67 mm lens as that housing also does not access all functions
I don't buy a housing thinking of flooding it!!!