1. Suunto Vyper Air Wrist - no transmitter: $450 (€340).
2. Suunto Vyper Air Wrist with Transmitter: $740 (€567).
3. Suunto HelO2 Wrist with transmitter - Demo model: $775 (€586)
4. Suunto HelO2 Wrist with transmitter - new in box: $899 (€680).
Long term, most of my diving will be in Ireland, with some trips abroad. Not sure yet if I want to Tech dive.