Here is some more competition on the super low latency memory front, this time from Mushkin.  They are offering up PC3500 DDR memory at a latency of 2-2-2.

Mushkin's outstanding Redline memory modules have shown that great timings are possible with more voltage, and as we've learned over the years; voltage makes for greater stability with the down side of extra heat. With that said, cooling is of course essential for these modules. The price range of these modules are around $190.00 USD, which places them within our 'redline' of pricing for 1GB of memory.