Mike G.wrote a review of 2XU A:1 Active Wetsuit - Men's on April 20, 2015
Familiarity: I've used it several times
Fit: Runs small
I will focus on two things about this wetsuit, things that I feel anyone who is looking for a wetsuit of this caliber will be interested in. Side note: I'm an ok swimmer, have a good body position in the water.
1. Quality vs a more expensive wetsuit. My review is limited here, but I've had a Blue70 Reaction suit that I returned due to sizing. As far a quality goes, I will say that the Blue70 Reaction is noticeably better quality. Minor things like the seams, inside lining, zipper and overall construction. Flip side is that you will pay a lot more, duh! The question is, it is worth the extra and will you notice while swimming. In my opinion, I didn't notice it that much. Buoyancy is about the same between the two. I actually find it easier to remove the 2XU in T1 than I did with the Reaction.
2. Sizing: This is always a question and I wish more people posted this. After reading someone's else's comment I went with a Medium. I am 180.3cm tall, 96.5cm chest, 85cm inseam, 78cm waist and I weigh 63.5kg. The medium fits me perfect. I have enough room to wear my Tri Kit under and a HR strap too without it constricting my breathing.
3. Summary: I got this suit for just under $200 here after BC 20% promo, credits and ebates. For the price, you can't go wrong. And if you are looking at an entry level wetsuit, I think this a great option. Would I buy again, yes!
Side note....I forgot my Body Glide during one training session and was able to swim 2500meters without any neck irritation.