I feel like there's a lot of conflicting information on these tires. How many versions exist?

I've been a fan of Conti's tires in the past and would like to run these stans-tubeless. I ride east coast stuff w/o a lot of sharp rocks but don't want wet-tissue-paper sidewalls either. I'd like to keep the weight as low as possible but still have the strength/durability needed for some rough-n-tumble aggressive xc. If there's only one choice of MKII 2.4 29er then I'll just go with that but if there are options then I'd like to know what they are so I can make the right choice.