Anodized arm wand

I am about to purchase an arm and I have a choice of either anodized version or not. From what I am seeing the anodized version costs $30-40 more. Does it in any way reflect the sonics side of things or just the color scheme/preferences etc... In my system the non-anodized version will look closer to what I have but if the sonics differ I will think again.
Thank you
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Thanks, Liz, I gather then I should not be concerned with sonics too much.
Good 'cause I like silver one better :)