What Headphones? Looking to upgrade..........

Okay, here's the dilly. I have a pair of Sennheiser 545s. ;) and well, I used to have a pair of klipsch 2.1s. Problem is my headphones made the speakers sound so badly - I decided to sell them off.

Anyhow now I'm looking to get new headphones. Trying to compete with my dad's latest sound equipment he bought like over $20,000 worth. Making my headphones sound bad damnit. hehe

Anyhow I"ve done some research and a little bit - but I"m interested to hear opinions. What would be a good alternative to the Sennheiser 545s? I'm interested in clarity, no static, lots of detail and comfort. Bass would be nice, not overpowering, but solid.

I'm looking for 'detailed' sound. I've heard good things about Grado, Koss, Sennheisers 580/600......etc. etc. What are youthoughts? They will be used for listening to music on the computer among other areas and for gaming.