Meikon vs Meikon SeaFrogs for RX100

Anyone know the differences in the two housings? I have an RX100 Mk1 and looking to use it for some Dive Training for our team and just getting started. Thank you in advance..

The newer SeaFrogs housing fits the entire RX100 line (I through V), is rated for 60 meters rather than 40 meters, and has the zoom knob of the left side of the housing rather than in front, by the lens port, which is a lot more accessible. It is also made of almost opaque plastic, rather than transparent plastic of the first generation housing, which is better at stopping light leakage if you're using the internal flash to trigger strobes. It is, however, considerably more expensive - $250 or so, while the older housing can be easily found discounted to under $150. Note, however, that all Meikon housings for RX100 line, as well as the official Sony housing do not give you access to the rear dial, so full manual shooting is very awkward - you have to assign either aperture or shutter speed to the lens ring, and go to menus to switch between them. Finally, and here I'm not 100% certain, but the lens location in RX100 I/II and III/IV/V is slightly different, which, in the Sony universal housing, results in models I and II having the lens slightly off-center in the port, which makes it incompatible with add-on wet lenses. The SeaFrogs universal RX100 housing uses additional shims to fit the different camera models, so it might or might not be affected by the same issue.

Thank you for the help. Since I have the Mk1 and might upgrade someday I will give the Sea Frogs a go then, plus the other advantages you mentioned. I'm just getting into underwater photography so wanted to start out inexpensive with what I had. I have lots of experience with photography on land and a few of Nikon DSLRs and lenses just not sure I want to take one underwater yet..

Thank you for the help. Since I have the Mk1 and might upgrade someday I will give the Sea Frogs a go then, plus the other advantages you mentioned. I'm just getting into underwater photography so wanted to start out inexpensive with what I had. I have lots of experience with photography on land and a few of Nikon DSLRs and lenses just not sure I want to take one underwater yet..

Did you get the Seafrogs housing and how did it fit?

I've also got the Mk1 and was looking for an affordable housing with a 67mm port for wide-angle dome and macro, which is also compatible to the newer models as I might upgrade once they go further down in price.