I rock some Grado SR80s for home, Ultimate Ears super.fi 5 Pro for when I need noise isolation, and Koss KSC75 for certain other situations.
Grados are just sick for attack and timbre and detail and give you just gorgeous acoustic sound reproduction...a little less soundstage than some would like until you get into their uber-expensive stuff.
The UEs are awesome for bus rides and when I want to jam to a guilty pleasure of mine
And the KSC75s are an amazing value. Many people I've seen on head-fi with crazy, exotic setups have a pair of these $15 headphones because they're just one of those little things you find in life that are quality and don't cost a fortune....they have like titanium diaphragms and other stuff not usually seen at this price point but are also just a good design.