HiFiMAN HE-400i and HE-560, both newly announced at CES, will weight around 350g... You might want to check it out - http://www.head-fi.org/t/698831/fresh-outta-ces-the-hifiman-he-400i-and-he-560/270
I saw it. I might have something to use my Cable Company credits on. I'm watching that and Oppo PM-1. But the T1 is also down around $900, but supposedly T90 gives around 90-95 percent of that headphone's performance for about $600 and is much newer.
Choices, choices...I really just upgrade my DAC/amp and let the reviews all come out later this year.