From what I've heard HD-400 and MadDog modded T50RP. I haven't had time to compare the HE-400 with LCD-2 (but I liked the HD650 slightly more when compared to the Sennheisers, the new rev of HE-400 was a bit too bright for my taste), and I haven't listened to the T50RP. A cheaper alternative is also HE-500 which should sound very similar with a cheaper pricetag.
Edit: I noticed you already had the Hifiman and the T50RP, guess you liked the LCD-2 more than them?
Edited by Monir - 5/23/13 at 3:54am