On the Camry, i believe there are 3 motor mounts, did you replace all of them???
If the noise is that loud especially during acceleration then i believe the installation of the motor mount was done incorrectly. I heard alot of aftermarket parts are going bad, something about lower production cost
my suggestion buy OEM..... heres a website
http://toyotapartszone.com/
Great prices and customer service, got my rav 4 fixed for cheap and made it back to its original condition