Bikesdirect.com has the Mercier S3X... I'm thinking about getting although I prefer the color selection of the other Kilos they offer. Not sure what to do. If I could get the "Stripper" edition in the white or the Orange Crush with the S3X hub for the same price or just a little more I would... I'd also consider picking up the S3X hub at a later date but they seem to be out of stock at the moment.
I think also I'd prefer to route the shifter cable along the TT with the cable guides as I don't plan to use the rear brake... so the extra loops below on the S3X for me would be redundant.
It's hard to complain about a bike that costs less than $400 though.