Worst triggers? Nay, too broad a statement. New ones can have a pretty gritty DA pull and so is a valid complaint. Yet, of all my CZ-75b's have had very smooth DA triggers. My CZ-40P was gritty, but dry firing smoothed it up quite nicely. It is the price of being lower in price than the competition. Compare a new CZ to a new Glock or a new SIG or a new Hk.
I have never had problem operating the slide, but then, I am accustomed to shooting 75's and the EAA Witness. There is less to grasp than the 1911 but it is still plenty of room to grasp. To me, the safety has always been easy to manipulate, but then, I'm used to using the CZ and do not have to transition from the 1911. As to price, alas, you are right, on the regular market their price has gone up. Yet just three months ago I picked up my most recent CZ-75 NIB for $300.
In any case, all advice is certainly fair. Yet, comparing stock CZ sights to custom 1911 sights is biased. Stock CZ to stock 1911 there is no comparison, the CZ is leagues better. Get into the realm of custom sights, then they can be had for both.
Ash