I don't have any of the various Silent Soldiers, so I can't speak specifically about them, but I do have a Caliber and two Mini Divisions, one in G10 and another in CF. I'll definitely be buying more Brous' at some point. I want a VR-71 in the worst way, but they're right-hand only.
The G10 Mini Division I have is pretty much perfection in every way. The CF one has some flaws that I wouldn't have accepted had I bought it new. The issues are purely cosmetic, things like the jimping not lining up perfectly between the scales and liners. Functionally it's perfect though and it's one of my favorite blades to carry and use. Since I bought it used I was a little less picky about the cosmetics. The G10 version, which was actually the first Brous I bought, is LNIB, so it's staying that way as a back-up to the CF one.
The Caliber comes close to perfect in the F&F department. It's also perfect functionally. It's a bit smaller than my usual EDC's, so it only gets carried when I need to carry something small. I wouldn't call it a gentleman's knife though since the heavy detent means there's no way to open it slowly. The swedge makes it almost impossible to open two handed. As far as small flippers go it's excellent; just realize that flipping it hard is the only way to open it.
If I understand correctly, the CF Mini-Division was manufactured the earliest of the three, so possibly Brous' fit and finish has improved since his earlier knives. That's purely supposition on my part though. Overall, I think the G10 MD and Caliber are worth the going rate. You can get a Caliber for $330 new if you look around. I would have been disappointed in the CF MD if I'd paid new price for it.
They come up with some frequency on the exchange and some good deals can be had.