Regarding lining - my easiest suit to put on is my 5 mil yamamoto open cell - it has no coating on the inside. My other suits all have some kind of coating that supposedly makes the suit easier to put on. When my yamamoto is dry it is very sticky and impossible to put on - but with a little lube it seems to become slipperier than the coated suits - go figure? (that suit is also freakishly warm - I cannot use it until the temp is below 10c or so.
If you are doing long, stationary dives you will need a thicker suit. At 17 c I am quite comfortable in my three mill - but after several long, stationary dives, I need to do a few sprints to keep the chill off. I swim with a monofin - and often dive several hundred meters off shore - so the swim comes naturally.
My experience has been that the open cell suits are considerably warmer than lined suits for the same thickness - but I've only used a couple of lined suits.
Currently the temps here are around 23c. I've been toying with the idea of getting a nylon lined 1.5 mil smoothskin out suit. The trend seems to be warmer in the summer these days - in places I have to get down to 25 meters or so to cool off in my 3 mil!
If you are doing long, stationary dives you will need a thicker suit. At 17 c I am quite comfortable in my three mill - but after several long, stationary dives, I need to do a few sprints to keep the chill off. I swim with a monofin - and often dive several hundred meters off shore - so the swim comes naturally.
My experience has been that the open cell suits are considerably warmer than lined suits for the same thickness - but I've only used a couple of lined suits.
Currently the temps here are around 23c. I've been toying with the idea of getting a nylon lined 1.5 mil smoothskin out suit. The trend seems to be warmer in the summer these days - in places I have to get down to 25 meters or so to cool off in my 3 mil!