excellent support shorts, however the seams are not of a highly durable quality & have stretched & torn after a relatively short time. They havent ripped yet but after maybe 20 uses they seem to be on the cusp of giving up the ghost.
There are items in the Under Armour range that work really well for me, and there are some that do not. These Under Armour Core Compression Men's 9 inch Coreshort Pro shorts (and the very similar Coreshort Pro shorts - very little difference) fall into the category that work. If I want a bit of extra warmth then I go for the leggings equivalent (Under Armour 2012 Men's Core Pro Compression Leggings), but otherwise either of these Coreshort Pro shorts are my preference when exercising.
They provide support where it's wanted (the X design seems strange at first, but it works) and good moisture properties to keep you comfortable even during a long workout. When they say Compression, they do mean it - these seem to work best when really snug - just take care to arrange things so that nothing sensitive gets bruised during exercise!
The only downside I find regularly with Under Armour, is that when you find an item you like, they very quickly sell out and it's hard to get the same again (in the UK, at least). Be warned.