What's the worst sylladex?

/More in a practical and daily use.

We all know the wallet is by far the best sylladex since it both has seemingly infinite storage and you can grab anything in it. But what about the worst? We could argue that Karkat's sylladex is pretty complicated to use, but if you have the knowledge to crack the codes (i.e Sollux) it could technically be useful so what do you guys think?\