I am a Cz 75 Shadow and Cz 2075 RAMI P owner. I love Cz guns.
It depends a LOT on what you want to use the gun for:
Home Security;
Concealed Carry;
Service Pistol:
Competition;
Fun at the Range.
Here is how I would rate the 75B on these applications:
Home Security: 80%, I would get an SP-01 instead because it has a tac rail for a LED light. SP-01: 100%
Concealed Carry: 40%, it is too large for normal concealed carry IMHO. Go for the RAMI instead (90%)or a Kahr or a Glock or a XDM or a Walther P99.
Competition: Depends on type, but 90% for IDPA ESP Division or USPSA. Recommend Glock for SSP IDPA.
Fun at the Range: 100%- NO pistol is more accurate without a scope except for .22 cal.
9mm for sure....ammo prices are so much better.
Cz's are great guns...so much better than Sig's. The only real competition is the Tagfoglio and the EAA Witness in this category.
But be sure you want a DA/SA handgun. You will need to do first shot DA, or run cocked and locked for SA.
If you do decide on Cz, I highly recommend the Cz custom shop. Get a hammer/trigger job and you will not regret it...if you plan to shoot a lot.
Cz makes great firearms...you really cant go wrong with their handguns.
Invest in good training so you learn proper grip, stance, trigger, sight, malfunction solutions, legal/ethical, liabilties, etc. Purchasing a handgun comes with a lot of responsibility.
Good Luck,
CC