I am a multi suit diver. Although I like my drysuit, I do miss diving wet. Diving dry when the water temps drop to "uncomfortable" makes diving enjoyable again. The fact that water temperature never even crosses my mind while in a drysuit is relaxing, I prefer to be wet. So I am looking forward to those early summer days when the So. Cal waters warm so that I can comfortably dive wet again. For me the happy number is 57. If the water is 57 degrees or below; without question that'll be a dry dive. Above 57 degrees, the answer may vary depending upon the dive, conditions, and my dive buddy if applicable. But that's just me.