CZ vs. SR9
I strongly suggest you find a place that at least has them both in stock and handle them before making a final decision. They are quite different:all steel vs. polymer; DA/SA vs. DA; hammer vs. striker. A couple things they have in common are 9mm, good ergos, soft shooter, and very accurate.
You have some decisions to make, too, that may help guide you. Going to carry? The Ruger may get the nod for lighter weight and slimmer frame. Strictly range gun? The CZ may get the nod there - heavier weight helps tame recoil even with the 9mm. Pricetag? The Ruger will probably win that one.
If you decide on the SR9, I might suggest waiting a little, as the new trigger on the SR9c is a much improved version of what has been in the larger gun. It's supposed to get put into the newest full-size guns, but it can't be retrofit to older guns. Try a SR9 vs SR9c - see what you think (if you want a carry gun, the compact may get your approval, too).
Both are good guns, but both have an area of strength. Shoot them if you can, but at least handle them before buying.
Q