Anodizing heatsinks

So I don't know it it is worth my time. But on my drive back from HSUSA there is a company that I deal with at my job that will anodize my two 3.5in by 36in heatsinks for $100.
1)Do you guys think it is worth my money to do so.
2) the company said they offer a thick and thin coat, which one should I get(if its worth it)

I did that in the military. Nothing to it. Literally just put the stuff on and let it sit and then wipe it off. Not thick or thin.

No need for it unless in extreme environments.

Save your money. Totally not worth it.

In fact, you probably would have been better off putting that extra 100 towards simply bigger heatsinks, or add fan to them.

I would say no if your heatsinks are doing there jobs properly. It does look nice though.

Whether it's worth the money is up to you. It does improve the efficiency of the heatsink somewhat (apparently the relative effect is greater for passive configurations):

http://www.aavid.com/product-group/extrusions-na/anodize

Yeah depends on how well your heatsinks are doing without it. 100 bucks could by more cobs and increase efficiency as well...... Less heat that way and more light as a bonus

Thanks for everyone's responses, it seems because of the fans I will be running, anodizing is a waste of money. it would only be a look thing, and on the ugly light i built i don't think i can do anything for looks. But then again it is only $100 for light that I've already spent close to $1600 on.

If you don't mind scrubbing your raw aluminum down from time to time, anodizing will help prevent the
oxidation from happening. And by thick or thin coat, did they mean hard anodizing vs standard anodizing?

That sounds right. To be honest he kind of went through what they were rather quickly.

Edit: Is the build up even that bad for the aluminum?

It is oxidation. It leaves a thin barrier between the heatsink and the air so it will not dissipate heat as efficiently. By how much?
And is it even noticeable? Who knows until you measure it with an IR temp gun. It is $100 so the value will need to be weighed out.

Just wanted to add... Polishing seems to have a neat effect on raw metals as it curbs the oxidation process. Maybe even a thin
coat of wax will suffice?

Hope this helps.
Cheers!