I am a fan. I own two 2XU Comp tri suits that I have worn for sprints and a HIM last year. Comfortable to me. Like then because there is nothing to worry about in terms of changing in transitions. I also own an orca that fits well, but havent raced in that yet. Still not sure if this is the type of suit I'll wear for my IM this year, that will be determined later I guess.
i raced for them last season, and used both the endurance and short course suits. they are AWESOME, and i am sticking with them this year even though no longer sponsored.
i have race up to HIM in the short course suit, the endurance one i am sure you could ride all day and be fine.
they are a bit thinner than some suits over the body, so take care of it when not wearing it, i would refrain from throwing it int he washer, do it by hand.
I raced this past season in endurance suit and loved it. Very comfy, good pad and not bothering during run. As said above, suit is thin and fragile. Be very gentle with it. I will stick with 2XU this season but going to their hybrid suit Super Elite Endurance for non wetsuit swims. I want one do it all suit as opposed to getting a swim skin, gaining time on the swim, but loosing it all in T1 for skin removal.