This is a tough one. I would have bought a 5060, but if you want to shoot wide angle, you need a dome port. For me that's a deal breaker. If I can't go between macro and wide angle, I'm not a happy camper. It's one reason why so many people prefer the 5050, which also has a faster lens.
I would rather try the A95. The camera and housing are less expensive. You can do macro and use both the Inon and Epoque lenses. The Olympus does have slightly higher reolution (according to the reviews) and does have better strobe options.
Considering that neither is an SLR, they're both pretty good. You will need an external strobe.