Than, you are not wrong...Camaro uses the word way "Titanium" too randomly in my opinion...
Titanium products tops, shorts, tanks, farmer johns, gloves and long pants that say Titanium on the front are the 2mm reversible, black neo on one side silver on the other less form fitting than the Blacktec and Modetec. Modetec has a titanium "coating" hence some of the confusion, REI is calling the suit they are selling Titanium when it is actually the Modetec. They are .5mm and Titanium is the exterior coating and those are old 2014 suits truly not are warm as the Blacktec. Really depends on your climate and use... My opinion is Modetec is great for early spring, fall and cool nights and mornings in summer in the cooler climates, the southern USA anytime (ie Florida) and those who never get cold. Blacktec would be better suited for the rest, then we could get into which mm Blacktec would be best, but I will leave that for another time.
Again trying to clear some confusion, hopefully not add to it! One last thought... that is a common mention through these Camaro posts the waist in the tops is often where they run big, you can avoid that by sizing down or buying a shorty or full suit where it does not matter as much... Whew, sorry so long winded...