yeah, i prefer to have the bitsetting and rpc option disabled. As far as burning faster, I guess a bit faster is fine as long as it produces good result. (When I had my 2500A, I flash the firmware to herrie's 1.07(which is a very well known and proven) but now looking at the forum, it seems like there's no 1 "great, stable" firmware for the 3520a.
I am still using the old media from my old 2510a drive, hence they are a bit lower speed rated than 16x, but htey got the job done:).
Thanks for the input though guys, really apprecitead.