I've sailed thousands of hours in a harness. I've owned a ton of harnesses. The Worrell XT was the most comfortable for long periods on the wire, however it was too bulky for most bouy work. The new Zhik harness is hands down, the best alternative I've found. Lighweight, no buckles, a huge back support pad, and broad spreader bar. It will be available in the US mid-June, Order here at the Catsailor Online Store. There was a thread on this harness a while back with pics, etc.