Factor I hope this helps you.
The big advantage of the Scotts is definitely the separate high speed and low speed circuits. These circuits have nothing to do with how fast or slow you are riding, rather they initiate their action relative to the speed of the deflection of your steering.
So a big hit to the front off the side of a rock or tree root usually means a high speed deflection of your steering, hence the high speed circuit cuts in and dampens the deflection to hopefully keep you upright.
Minor deflections like getting caught in a rut or the like are handled by the low speed circuit and generally don't demand the same level of dampening to help keep you upright, so you can have the low speed circuit dialed down so you aren't fighting it in the single tail.
So you see you can have the best of both worlds ! Having the low speed dampening set so it helps you in the tight stuff but not to heavy to hinder or fatigue you, and having the high speed circuit there to catch you if you hit a hidden surprise. Awesome things I tell you.
I have the extra knob on the low speed circuit so you can adjust that on the fly, very handy in varying terrain or between road transport sections and the tight trails.
I had the MSC but it is very limited in varying terrain. It's still a very good thing but for the variable trail riding I do the Scotts was the best choice.
I left the swing settings at standard but increased the high speed dampening by half a turn. I run the low speed dampening at half a turn in from the easiest setting, which is great in the single track but increase the dampening to one or one and a half turns in for fast fire trails.
I have had my suspension done by Frank Pons with appropriate springs for my riding weight and set the suspension up for general trail riding.
The whole package works extremely well, and once you have had a ride on a bike that has been set up well you will be asking yourself "What the hell was I thinking !!! This should be done to your bike first up" You wont believe it is the same bike over rough terrain.
Believe me it is totally black and white. I was lucky to have a ride on Steve's bike at the 07 Force Ride at Louee and only then realised what a difference it makes.
So my advice is get your suspension done and set up properly first and then get a Scotts steering damper second. If you can afford to get the lot done at the same time then prepare yourself for a very pleasant surprise when you ride it. The suspension and the steering damper compliment each other, but a well sorted suspension is far better value first.
Get yourself to the suspension workshop at the 08 Force Ride, have Frank set up your suspension, fit your new Scotts steering damper and then have it all dialed in by one of Australia's best suspension gurus, then some fine tuning on the trail by another suspension tuning guru (Steve) and I guarantee you will come away shaking your head and with a huge smile on your dial !!!
Cheers
Garry.