Xenium ICE is a great chip. Easy install, even on a v1.6 just a tad more soldering required. Or if you have a pre v1.6 box then for like $10 more you can get a solderless adapter and just well plug it into your motherboard and your set to go.
The duox2 is a good chip, has two bios banks, 512k each, v1.6 compatible, just need to do an lpc rebuild, has the v1.6 bios already on bank 1 and the best part, it's only $40 AUD.
Oh, and i've never done any soldering before, but with the pin header it was easy as. LOL, just saw the date on the original post, i suppose you've already got one and installed it, lol. Ghost town boards.... Spoooky.