I currently have a Blue Seventy Helix (2013 Wattie Ink Limited Edition). My previous suit was an X-Terra Vendetta. They’re both great suits and I’ve posted excellent times in each. Just some thoughts -
The Vendetta seemed like a more durable rubber and feels more solidly built compared to the Helix with its super-light and soft rubber. The Vendetta has a traditional zipper that zips up, rather than down. However, you can’t zip yourself up in a Vendetta anyway and X-Terra recommends you don’t try.The Helix, for me, feels more buoyant.I have an easier time kicking in the Helix.I have an easier time getting out of the Helix.The idea of encouraging rotation is, to me, a little strange, since the ideal open-water technique, for a SwimSmooth perspective, is the relatively flat “Swinger.” Even the other ideal type, the “Smooth,” has relatively little rotation compared to some of the other types (notably the “Overglider”).Worrying whether a suit is better for you if you are a leg sinker, power swimmer, etc. is, IMO, overthinking things. Get a good suit that fits you well and focus your mental energy on improving your technique.