So is a CZ that much better than say a SIG 226? Or is cost the deciding factor?
I had a P226 Extreme that I shot well. Its ergonomics were well suited to me. Then I got a CZ75 SP01 Shadow. Even though I shot the Sig well, I shot the CZ just a little bit better. I found the ergos on the CZ fit me just a little better than the Sig. There was no single "deal breaker", but I found that when I went to the range, I tended to take the CZ and the Sig stayed in the safe. After a while, I came to realize that the P226 was an amazing gun, and it deserved better than to be left in the safe, and I sold it. There was nothing wrong with the Sig, the CZ was (for me) just a little better in a few different areas.
Among the things that I like on the CZ:
Low bore axis results in minimal muzzle flip and a low perceived recoil.
Fantastic Trigger
It is very accurate
It has a fiber-optic front sight
The ergos (Mag release button, slide lock/release, safety, general balance & feel) feel like they were custom made for me
I shoot IDPA, and although using the safety puts me into ESP (the P226 was SSP), I prefer it to the first shot being DA (With the P226, the first shot was DA and then the rest (after the gun cycled) were SA so you had two different trigger pulls.)
Both the P226 and the CZ SP01 Shadow are great guns. For me, the CZ was slightly better in enough small ways that it became the one I chose.
(The P226 Extreme had one thing that I really liked though and those were the Hogue G10 grips and so I ordered a set and put them on my CZ.)