Play it safe my friend. Go for other opinions..I understand: Biopsing is not fun!
EVen after I was diagnosed, another biopsy found no cancer! It was only after my Urologist decided to 'break the tie' and do a saturated biopsy that they found it again (I wa sput to sleep for that).
On ther other hand, something else could be causing your high PSA (which will be good news no matter what that something is!).
Best wishes as you contunue to investigate.