800MB/90 Minute Blank Cd's

I have a quick question regarding 800 mb/ 90 minute blank cd-r. I have heard quite a bit about overburning using this particular blank cd. Is it really necessary to use Overburning when I’m trying to record 86 minutes worth of audio on this cd? I have done some research and some people are trying to fit 90-99 minutes of audio on the cd? Many people also use the popular program Nero Burn that has the overburning feature. I have Burn 4 Free program which works fine and includes overburning as well, will I have to use this feature if i am not recording no more than the capacity allowed? I would like to see if anybody can answer this before I spend $35 on Cd’s.