It really depends on your soil. I have the Ti stakes but rarely use them except in rocky places with a rock placed on top of them, otherwise I refer to them as chipmonk stakes (reference to the stakes they put the groud to tie a dog to)

I have the round Easton aluminum stakes that I've used for 30 years and for the most part these are the originals - obviously they do stand up to being used in a variety of terrain, ad they hold better than a chipmonk stake.
Jim
anybody using 12 stakes needs to rethink things...