RE: browning t-bolt or cz 453 american
I personally do not like to look at or use rifles that the magazine sticks out of the bottom of the stock like many CZ's.
Some CZ's have a set trigger that is nice for target/varmints.
I have not yet shot a new T-Bolt but I do own one of the old ones, it is a great rifle.
Personally I would not hesitate to buy the T-Bolt if the choice was mine