I was thinking about the SPF70 or the PRG80 model.
I like the timers and alarms on mine too.
I am surprised that Casio took out the Moon and Tide functions in the SPF70. Ive used that a few times on my SPF40. Unfortunately through it is a bit simplistic in its tide predictions. We get a funny tide here, but I have forgoten its name. The tide predictions are fine untill we get that tide, and then they are out untill we get the funny tide again. Its ok if you can remember the delay factor for both, and manually change it to suit.

My watch left earlier this week on one of my mates wrist. He is cruising through OutBack Australia somewhere out near the New South Wales and South Australian border on a motor bike.Thats nearly 1000km from here and he has his 2 daughters aged 9 and 12 riding along with him. Before anyone gets alarmed about girls that young riding motorbikes on roads, I should point out that they are on cattle stations and the nearest road to them would probably be close to 200km away. There is also a couple of other riders and a beatup old suzuki 2-stroke 4wd as their support vehicle.

He got a message back to me earlier today saying that he loves the watch, so I guess we are going shopping late next week when he gets back.
So I guess so far mine has passed as a good survival watch.