Genuine question, as weighing up the options and there are some Mk2’s frames out there going for great prices, if some German web sites are to be trusted.
I bought my mk2 from from bike-componants.de, I was a little skeptical at first but it arrived safe and sound, and the service was top notch. I also ordered the rear mech rock guard from them at the same time.
I couldn’t stomach buying the Syntace SCS chainguide for 125 euro, nor could I find it any cheaper, until……. I called Bromley Bikes and got one from them a lot cheaper, well worth the call. Speaking to other 301 and 601 owners, the guide is v v nice, but when they have not used it, they have not had any chain derailment issues. I chose to go with it, as I’m running mine 2 x 10.
Also look at the proper syntace/sixpack 140mm seatpost shims to enable you to run a regular 30.9 or 31.6 seatpost size. Order some syntace mega spacers as well, really cleans up the front end of the bike: http://goo.gl/OKZYtf
Hope that helps.