I've got these and love them, very nice bass (the 50mm bass drivers put out as low as 5 Hz)
Amazon.com: Sony MDR-V700DJ DJ Style Monitor Series Headphones: Electronics

Price: $85

They do get somewhat uncomfortable if you wear them a long time, but giving you ears a 5 minute break will fix that. Plus the cups rotate around so you can wear it a lot of different ways.
The cushioning in the cups will "cancel" any noises around you for sure - they've very thick and you can't hear anything outside when you've got them on.