+1 On the LA-900. I have Lawton modded TH900's and they are fantastic with hip-hop and other bass heavy music. Stock TH-900's are definitely problematic in the treble regions and part of the reason my TH-900 was sitting on the sideline collecting dust for a while. But the Lawton mods have breathed new life into them for sure and currently get all my head time.
I have a Utopia on the way and think it will offer a good contrast headphone when I listen to other stuff. I am still hoping it will be good for mainstream stuff as well though. We shall see.
Cool...I only had the LA900s (on-loan) for a week and was thoroughly impressed with them (especially being closed headphones). The Utopias have really, really impressed me...curious to hear what you think of them with electronica and hip-hop. Personally I think I'd prefer the LA900s. But with the genres I listen to mainly (rock, metal, jazz, classical), the Utopias are among the very best I've heard.