Just to jump in late on this, I just got an 860 from pricejapan. I ordered on a Thursday and got it on Monday (DHL shipping). Pretty fast if you ask me.
Everything being in Japanese wasn't a problem. I got into the English service menu, backed up the original rom to an sd card, got into the Japanese service menu and put on pdaXrom. Nifty!
If you haven't already purchased and you're planning on replacing the default stuff, this isn't a bad way to go. If you plan on converting, I wish you better luck finding a terminal on the default rom than I had (I couldn't find one, period).