Thanks SJX for your answer,
I'm happy you like the basic Marine model, and I can see why you wouldn't like the Marine Alarm (I do'nt like it either, actually).
The chronograph is debatable to some, but I happen to like it. True, its size is a bit on the high side, but its shape and some of its reflections are very attractive to me. I also like its chronograph function with central minute, though perhaps not so much the luminous 15min on the first quarter.
In conclusion, I like both the 5827 and 5817, but like you I do find the other later models like the Alarm much less attractive and Breguet-like. (just my opinion)
Cheers,
Magic.