I would not buy any of those two before going into a shop and checking that your housing that is rather compact has got enough surface for the sticker part
Only the sea and sea mask that you can basically customize to your housing will always work
Only the sea and sea mask that you can basically customize to your housing will always work
Just about any strobe will work as long as it can be optically fired. You want a sync cord that has one end which will attach to the outside of your housing directly over where the camera flash sticks up. Usually this is done with a sticky velcro system, see links. Once it is in place you can simply use black electrical tape to Mask the inside of the housing so the light from the camera flash does not cause backscatter. Hope that helps.
Sync Cord for a Sea&Sea type strobe:
10Bar Sea & Sea 2M F/O Sync Cord - Sync Cords - Strobes & Accessories - Optical Ocean Sales Underwater Photo - 800-359-1295!
Sync Cord for an Inon type:
Inon 2M F/O Sync Cord - Sync Cords - Strobes & Accessories - Optical Ocean Sales Underwater Photo - 800-359-1295!