As with the others, I would recommend a drysuit.
Apart from the comfort in the water, its the effect after/between. You are far more likely to do a second dive if you are using a drysuit, than if you are using a 7mm wetsuit. Between dives you can either fully de kit, or partially dekit. Add a warm layer/wind proof and warm up. Putting on a drysuit for a second dive is not a big issue, putting on a cold, wet wetsuit takes steel and determination, and that's assuming you can get your body temperature back up to something sensible.
Even in the red sea - I've seen people skip the evening dive because their wetsuit is cold and wet (in relative terms).
Gareth
PS There are a few threads running at the moment about drysuits, types, issues, undersuit clothing and techniques.
Apart from the comfort in the water, its the effect after/between. You are far more likely to do a second dive if you are using a drysuit, than if you are using a 7mm wetsuit. Between dives you can either fully de kit, or partially dekit. Add a warm layer/wind proof and warm up. Putting on a drysuit for a second dive is not a big issue, putting on a cold, wet wetsuit takes steel and determination, and that's assuming you can get your body temperature back up to something sensible.
Even in the red sea - I've seen people skip the evening dive because their wetsuit is cold and wet (in relative terms).
Gareth
PS There are a few threads running at the moment about drysuits, types, issues, undersuit clothing and techniques.