The Indmar 340 is EFI to answer the question.

As mentioned most boats will pull a tube. The v-drive is nice for passengers not having to duck for ropes. I have a DD. I just didn't want to spend the money for a V.

The Mobius line will be more wakeboard friendly, and move into surfing easier. The Outback is more skier friendly with its smaller wakes. Depends on which you like more.

The Mobius will give you a marginally better ride in rough water.