Hi Steve. It is not so much the tool holder, but the inserts that are important. I have about a dozen toolholders. All are imported far eastern made & all seem to work just fine. This i cannot say about the inserts. Go cheap & that is what you get. I have plenty of cheap inserts , but they regularly need changing.
On the other hand i have a lot of Iscar inserts. These are made in Israel, they are superb but expensive. Hope this helps.
Steve.