best headphones

Hey guys, I'm new to the audiogon community! I'm trying to find good headphones for bopping around town, going on the train-- ones that have great sound quality but aren't fragile. I would like to spend under $200. I also want there to be a great low end without it being muddy. I've been looking at a couple models including, Grado--though I don't know what series yet, Fostex TH-7B (but reviews of that say the bass frequencies aren't very prevalent so this is not high on my list), AKG, and V- Moda. I'm wondering if any of you can lead me to a great pair of headphones! Thanks