Memorex DL 16x +/-RW?

i have an external memorex model #3202 3288. I was wondering if there is any thing i could do to increase performance for burning DVDs. I have updated the firmware from the Memorex website, is there a better version avaliable? Also i have it connected via USB. It has a firewire port on it but i was told that USB provides a faster connection on average and firewire fluctuates, is this true?

Also i’m using DVD Decrypter and DVD shrink, is there another program that would be quicker for ripping and encoding using my device?

Surely rebadged. Used SEARCH?