Aquanaut 5167 VS AP RO 15450ST

[xeal]

What would your pick be?
Though I love the Nautilus, it is way too pricey for me.
I am looking to make up my mind for the next purchase and still undecided.

I know one down side about the AP is that is is very non durable(scratches very easily), which will sort of put me off from wearing it as a daily watch for any and every occasion.
Is this the same case with the Aquanaut?
I do have small wrists at 6.25". How would you say the Aquanaut would wear?
I have yet to find it in stock at my AD to try it on.

Of these two, which would be your pick?