From what you've described reaction-wise, I think the Sheer would be an EXCELLENT addition.  Mine reacts just like you described, good mid-lane control, nice solid arc to the pocket, and the hit at the deck is outstanding!  Very controllable reaction, also reacts well to surface changes.  Without knowing your specs it would be tough to suggest a layout, however mine is drilled label, not exactly sure what the finishing statics were, but the reaction is just amazing!

Here is a pic of the layout...no video, hopefully soon (could use some help on that end, if anyone is willing...)
http://www.we-todd-did-racing.com/wetoddimage.wtdr/wNjYyNzE3NnM0MTNkZmQzMXk1NDE%3D.jpg

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Andrew Loose
"King of Them All"
"Evolutionary. Revolutionary."

I also have a Sheer and it fits the bill for what you are describing. Mine is drilled pin under ring, cg 2.5" right of grip center with a small weight hole. It reads the mids and makes a very strong move to the hole. Its not flippy at all. And as already stated, it "hits" very hard.

I also agree about the underrated part too, you dont hear much about this ball at all, but it is one of the best Track balls I have thrown.
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I just close my eyes and throw the ball