Core4element are cut ridiculously small, with very short arms and bodies, if that matters to you. 3xl was way too small for me, and certainly smaller that the first lite xl. I guess they are trying to save money on material. Icebreaker also is cut somewhat small, but not nearly as bad. I think first lite is the best that I have seen, for sure, outlasting the KUIU gear that I have seen. Good luck. Others apparently have different opinions. Too bad you can't try several out for yourself before buying.