Which one ? WaterProof 7mm W-1 or W-2

[Islandheart]

I am a big fan of the WaterProof brand. Already own a 3mm shorty, 3mm Capri, and a 5mm W-2.

I teach in water 69-72 degrees and if I'm doing just two dives the 5mm W2 is fine.

When I have various students of different levels I sometimes make up to 5 dives per day.

When I hit 3 dives I begin to get cold, 4 dives and I am cold and 5 dives and I'm hating getting in period.

Can't really afford the jump to Drysuit and their Semi-ry is pricey too.

Any comments on the "Real World" differences between the W-1 and W-2 7mm ?/??/

I know what the website says, but anyone dove both the W1 & W2 ??

[Wayne at DiveSeekers]

Of or few customers that have gone with a 7mm wetsuit it has been with the Waterproof W-2. They have preferred the rear zip w/spine pad and said that it has been warm.