Beautiful bike. I think that in the end, the Highlander will be out of my preferred price range, but there is no bike that I drool over more.
I have to admit, that I find other bikes better looking (Raaw Madonna V2 amongst others) but I have gone a long way already from not liking the Highlander at all, to loving it a lot.
I currently run a Megatower (as already mentioned) and get along with it well. The only complain that I have is, that going quickly over roots isn't as comfortable as I would like it to be. The high pivot should remedy that and looking at the geo, it is close to what the MT has.
What I like more is:
Bearings are better sealed. SC seems to build their bikes for good weather only. After only 8 months of riding, the bearings of the lower link have to be swapped already. I get them for free but still have to go through the hassle to swap them.
Taking out the shock is a pain in the ass on the MT.
Tire clearance of 2.8''. I don't run tires that wide but in the MT the "Der Kaiser 2.4" would rub its dirt off of the frame.
External routing. Of course, you would not swap your brake that often so that it really matters but I like external cables more.
As a sidenote: The promotional video in bad weather is so cool! You always see bikes being promoted in perfect conditions but most of the time I ride in the rain, mud, misty weather (just like in the video).