I've ordered a medium frame+ fork+ all the goodys that come in the package. Only the shock option is still open. What shock size is required? Has anyone tryed Marzocchi shocks on WFO, how about RS Vivid? Is WB 150's 1cm more travel also more quality one (quality vs. quantity)? Cavegiant has one- let us know. Seatpost: how far can you drop the saddle on a M frame? Thank you for your opinions on this matter.