I've tried both WJ and EnlargeIt. They struck me as very well made for the price. Unfortunately, I can't wear them. Yes, the pouches are large but are very shallow.... shaped like a parachute. As you can see in my avatar, the only place I really need extra room is in front; I need a pouch shaped like a traffic cone. WJ & EnlargeIt are essentially the opposite of that I need.
Based on my experience I'd guess these are designed for guys who are short, thick 'growers' and who have large, low-hanging balls.
If you've a long, thin dick and balls that ride high and tight I'd suggest Ergowear Max and Cockcon briefs and boxerbriefs. You can see them in my albums.
Hope this helps.