i had a TS, CZ75's, CTS LS and my friend has CZC CTS and checkmate. I also played with high end and stock 2011's.
The checkmate is a TS frame that has been re profiled and then checkered again in production . The CTS is also a TS frame with checkering removed so it is smaller than TS by CZCustom it seems. You could grip on the checkmate just a tid higher than CTS because there's extra cuts in checkmate under the beavertail and under trigger guard. Checkmate has front and rear checkering still while CTS is smooth. Checkmate in limited config is also a sight tracker design. The standard TS has bigger grip.
Now CTS LS is a 75 frame with a fitted CTS upper. There are some frame cuts and fitting needed in the standard lower to fit the CTS upper. I gave my 75 shadow to CZC and they fitted a CTS 9mm upper. It's my 3 gun pistol right now.
My buddy that uses the CTS can load 22+1 on his TS magazine. In the stock short mag that comes with checkmate we could load it only 20+1.
In my CTS LS, my standard 18rd with short CZC extended base, with CZC spring kit, i could load 23+1.
Peeps in CZC like eerw will be able to really explain everything of their products much clearer.
The beauty of CZC's are with reliability because 9mm mags are fitted. For 2011, you need and SVI or SVI mags for mag reliability. STI mags with spacers is $$.