I would say that the vyper is the best choice for a wide range of divers. The cobra is my choice for now because I love the info I get from the air integration feature. The mosquito is a great computer, but the size makes it harder to read during a dive. Some swear by thier mosquito though. For the money and quality, you can't beat the vyper in my opinion. It would have been my first computer if I hadn't have gotten such a great deal on my cobra.
The $50 difference in price is also not that great when you consider the fact that the suunto divemanager software is free and you can make your own interface for much cheaper than you can buy any other manufacturer's interface.
The $50 difference in price is also not that great when you consider the fact that the suunto divemanager software is free and you can make your own interface for much cheaper than you can buy any other manufacturer's interface.