I take it you live in Europe, since you state prices in EURO? There are some good deals thank's to the weak USD.
Sounds like a too big price difference to justify... Check so that no important controls are missing on the Aquatica. Regarding ports, Hugyfot can take a number of different makes. I know they take Subal, Seacam, Athena, Sea & Sea besides their own. Not sure about Aquatica. If not, it's like Luiz said, a no-brainer - get Aquatica.
But some general input on Hugyfot housings (D200).
Regarding viewfinder, Hugyfot has a great standard one and also an optional 45° rotatable one. I have not tried the 45° wf, because I have not felt the need for a better one. However I suspect that if I tried it, I would want it. So I don't. 
Regarding the allen screws, they are better than regular latches inmo, because when the housing is closed, it is closed - feels very secure. I have seen too many times people fingering and touching other peoples camera gear on dive boats... And it's just two screws, so I wouldn't describe it as awkward to open and close (personally, I try to keep it shut as much as possible. With a 4+GB memory card - I easily make 4 dives before I need to open).
I've had some correspondence with Hugyfot and feel that they are very accesible via e-mail and very service minded. When I needed a zoom ring, they promptly courired it to me in Stockholm, Sweden and had it in my hands just two days after placing the order.
They are situated in Belgium, so in Europe it's easy to just send the housing for service. Perhaps tricker from Asia or the US? But for sure it is better to have service available closer to home.
And yes, it is very sexy; and well built like a Porsche 911 from the 80's. It is also very small and you can customize it to your needs and likings regarding controls and features like moisture alarm, bulit-in HW TTL converter...
I think I paid something like EURO 2500 for my Hugyfot D200-housing, but at the time Aquatica didn't have a housing ready. Sea&Sea was about the same price (but not readily available). Seacam and Subal were too expensive.
good luck
/christian