I'm normally a small being 5.5 but was going for a medium because it fitted me. No medium's left. Very few smalls and I don't want to be further over the front wheel. The X0 is eye wateringly expensive and available in medium and small.  Maybe a frame and build it up.

 Tried the Spec but they are too burly. Commencal not quick enough. Lapierre is poor.  Cannondale look great but there are no independent dealers in the south so maintenance is a nightmare (I used to ride them).  Santa Cruz are expensive as are Titus, Nicolai and all the other contenders. That's why I went for the Giant X1. Great ride and great spec for the money and a medium fits me.