I like #1
it has more depth/dimension/texture/angles...
i think it looks great as is. and that 'bone shaped' rock in the front is neato!
Since the decision has been made I'll just say this last rock set up looks really nice.
Was just wondering about the stone, hate to be a downer but would anything like sandstone change anything about your water? Actually I was going to buy a nice piece of rock yesterday and the guy told me not to because it was sandstone. I hope not because I like your rock very much, looks super in there.