Well, for my two cents, I think the first is a better list, mainly for the reason that you have more troops and pathfinders.
I think all around, the first list is gold. The second list is lacking in troops, and almost reaches the point of monotony with the suits. (12 of the same configuration)
The first list is just awesome. You are one of the few people that truly seems to appreciate Crisis Battlesuits. I think all your configurations are really good, and you have minimized the costs by keeping them relatively simple, especially on your commander. Your hammerheads are great, I field them the same way.
The only thing that I have a question is about the gun drones with your battlesuits. Why did you do this? Its always nice to have to extra models to take wounds, but beyond that, the configuration of the battlesuits wouldn't go well with the gun drones.
If you're fighting marines, this list is even better. The plasma missile pod suits just murder them...