New Radiator question

[alghamedGT]

Hi Folks
i have a 1991 w201 2.5D with ac
i need a new radiator because the old was leaking very badly i used all kindes of glues but in hot summer with ac on when i hit 90°C mark the radiator start leaking because of the heat and the water pressure
so i decided to buy another one thats why im here
so Do you think its better to buy a used one from junk yard ?
me i want a new one but a mechanic told me that the new ones are crapy and its better to take one from another benz

also is there any diffrences betwen NA radiator , NA with AC radiator and Turbo radiator
because someone told me that there is 3 different types
and whats radiator that can handle the extreme hot outside temperature that reaches sometimes 45°C

im very so please help me