Define "mid-priced".
If it's $500-600 I can agree up to a point since you can get the HE-500 for about that.
But if it's $200-300 I haven't heard anything in that price ranges that comes close to the HD800 or LCD-2/3/X.
$200-400.
I've listened to those but have come to a different conclusion, which I mentioned on the K812 thread and elaborated more recently at length here: http://www.head-fi.org/t/700667/hd800-or-he500-upgrading-from-the-hd6xx-q701-impressions-updated#post_10325997.