The Shield would be perfect if it came with a slightly lighter trigger (to avoid paying for an APEX) and had a double-stack magazine.
The trigger reset is pretty decent (the APEX trigger kit reportedly improves reset also), as are the sights. Accuracy is plenty good for a BUG.
In size, it's like shooting a Kahr P9 with a reset trigger. Which means (assuming the Shield proves to be as reliable as Yeager and others have indicated) that it should take a big share of the market away from Kahr, or force Kahr to drop their ridiculously high prices.