I really like them both. The Seobean briefs have a bit wider sides than the Aqux, and they are also cut just a touch longer in the perineum area. I have been measuring the news Seobean brief in M, and comparing it with a M brief in Aqux.
The quality is excellent.
And for those of you who love Lycra compression shorts, the Seobeans are a must have. I got the blue pair. These are longer and fit below the knee, but sexy as all get out. Keith1178 runs a great store on ebay, and combines shipping on more than one item.
If you are concerned about butt coverage, order an L.
http://www.ebay.com/itm/Seobean-New-...-/321473989612
http://www.ebay.com/itm/Superbody-Sw...-/221370695233