Should I go with CBR or VBR(0) for my mp3's? Options

[DaGrandMastah]

Hi all, new to the forums. I had asked this question elsewhere and was told this is the best place to ask.

I'm currently in the process of re-converting my cd library into mp3's on my computer. Ultimately I'd like to get the best (lossy) sound quality I can get...and was originally planning to go with 320 CBR but I'm now reading a lot about VBR v-0 and how it's basically equivalent with an impossible to notice difference between the 2. I'm not concerned about space on my computer hard drive but I do plan on loading up these mp3's to my iPhone (where space can get scarce). I just converted 2 FLAC files and noticed a 1.5 mb difference between the 2, but as far as I can tell, no real degradation in sound quality.

Id just like to get some thoughts on this. I'm certainly no expert on the subject of sound science. To be honest, I'm not an audiophile at all...but at the same time, I want to "future proof" myself so that I never do realize (like I did this time around) that I'd like to upgrade my library (upgraded my headphones and started noticing a difference in quality of some mp3's).

Is there any reason why I may regret going with vbr v-0 over cbr or will I thank myself for saving the space? I figure that if some of the professionals on here cannot notice a difference then there is no chance I ever will.

Also, if there are any mac users here, could you please give me your opinion on the best settings for converting FLAC/CD's in XLD? Are the below settings good?

http://i50.tinypic.com/2z9e7u9.jpg

This post has been edited by db1989: May 3 2012, 07:36

Reason for edit: TOS #6: not an MP3 tech issue / TOS #5: post completely different topics to their own threads