Well, warmth issues are different from person to person. I've pretty much maxed out what I can put under a suit (400g of Thinsulate with polarfleece underneath it). The compressed neoprene IS warmer -- It delays my "time to shivering" significantly. Argon will be next, although the physics are not terribly convincing.
Weight and drying are definitely better in the trilam, but trilam also doesn't stretch, so if the suit isn't cut well for good upper extremity mobility, there's nothing you can do about it. Compressed neoprene stretches.
There are pluses and minuses to both. I just think you should get what works for YOU in a suit, rather than following somebody else's rules blindly.
Weight and drying are definitely better in the trilam, but trilam also doesn't stretch, so if the suit isn't cut well for good upper extremity mobility, there's nothing you can do about it. Compressed neoprene stretches.
There are pluses and minuses to both. I just think you should get what works for YOU in a suit, rather than following somebody else's rules blindly.