I've always considered our system to be more rational and to be more easy to deal with:

a "Gaz"/illion is a million to the power of "gaz". So you only have to know the Latin numbers which most people know anyway and can easily write down any large number.

An octillion? Is a million to the power of eight which means you have to write one "one" and then eight times six (for a million has six zeros), that is 48, zeros. There is no easy system for the new English understanding of Illions.

And that coming from a German who has grown up with our silly counting system which is known to be error prone even after years of training. We say the digits of a large number starting with first and then continuing with the second and so on like all (?) European languages. But we change the order in the last two digits and that for each new multiple of thousand. So for most others 123,456,789 would be (in their respective languages) "1hundred 2wenty three million 4hundred 5ty six thousand 7hundred 8ty nine" but we say "1hundred three 2wenty million, 4hundred six 5ty thousand, 7hundred nine 8ty".

This system is known to impair learning and understanding and leads to more transposition errors when copying numbers than in other languages, but whenever someone suggests a change of that system Germans reacts as irrational as the British when they feel their old measures are threatened.

Wolfgang