I see you have this identical question posted in two different subforums. That just confuses things.
The Wolfman Guerilla razors are available in Titanium, Bronze, 316L SS, and Anodized Aluminum. The best version is likely to be the Titanium, but it is also rather expensive @ $375. The bronze is next expensive @$325. It is also the heaviest. Bronze will patina over time. The 316L SS version is $275. The anodized aluminum version will be the lightest and the last expensive at $175. I have never owned an aluminum razor and I do not plan to purchase one.
If your budget will allow purchase of the titanium razor, I would suggest that. I have a couple of Timeless titanium razors and love them, but unlike the Wolfman, my Timeless TI razors are polished which makes them quite attractive. I love the weight of titanium,
If Titanium is to pricey, then go with the stainless.
If you want a very lightweight razor, go with the aluminum. The aluminum razor weighs less than 45 grams, depending upon the handle you select. That is 60% of the weight of a similar titanium razor and less than half the weight of stainless. Although that is a matter of preference, if you are used to heavier razors, you might find aluminum to be too light.
Others have already mentioned the potential for the anodized layer chipping from the aluminum razor. This is the same issue that exists with anodized aluminum cookware. You have to replace it every few years. While you should be able to pass down a stainless razor or titanium to your heirs, that might not be an option with the aluminum.