Go and try and always play the horn that is best for you. Whether that is a student horn, or a vintage pro, or a new pro, can be decided by only one person.
The wrong instrument can hold up even the best of the best. I once attended a concert where Maurice André played a Scherzer picc someone had talked him into endorsing. Now, a Scherzer picc is a wonderful instrument (I've had one, and played several others), but definitely it was not the instrument for Maurice. On that Scherzer, he sounded like a gorilla with bronchitis. And even though he endorsed the Scherzer picc for several months longer, he never played another concert on it. A week later, I heard him again - on his old Selmer - and he was back to his usual brilliance. So - instruments can work both ways.
But the only one to decide is YOU. No one else.