I tried out the xerotherm arctic and subxeros this weekend (top and bottom) in 45 - 50 degree water. Both were EXTREMELY warm in this "only cold" water.
In the end I felt the X/A's are perfect for my drysuit (FLX 50/50) and will be perfect in very cold water and ice diving this winter. Not too mention I have a pair of patagonia capilene 3's underneath that help keep me nice and dry as well.
Both were AWESOME undergarments though! The SubXero's look really cool too! They were just to bulky under my neoprene bottoms (but would be great for a TLS 350 suit)... Probably why they recommend them for TriLams only!
In the end I felt the X/A's are perfect for my drysuit (FLX 50/50) and will be perfect in very cold water and ice diving this winter. Not too mention I have a pair of patagonia capilene 3's underneath that help keep me nice and dry as well.
Both were AWESOME undergarments though! The SubXero's look really cool too! They were just to bulky under my neoprene bottoms (but would be great for a TLS 350 suit)... Probably why they recommend them for TriLams only!