JeffG:I have the Ultra-Flex Pro. On the DUI line 350 is "light" the 450 Cordura is "Heavy" and the CF 200 is "Real $#@$#@ Heavy"
The Ultra Flex Pro is close to the DUI 450 Cordura. Much heavier than the 350. I am not familar with the Z-Flex, so I have no idea what its weight/drying time is like, but it sounds close to the Ultra Flex Pro. But If I understand correctly, they do not custom fits for that suit. Only stoke sizes. If I am wrong, I'm sure someone will correct me.
Both DUI TLS 350 and DC Ultra Flex Pro can be custom cut. I've had mine for about a year. Initially had lots of problems with seal fitting properly and leaks, but have since repaired the deficiencies. Fit is usually the top concern followed by leaks/repairs. Believe the DC is more competitively priced when the "the works" are all said and done (P-valve, bellow pockets on both sides, dry glove attachment).
Harry