If you want multi-language support, then you need the Ultimate version.
I, and many of the people working on this forum, use ultimate although you can get by with less.
Do NOT buy over eBay. Buy from a reputable store where you can see the packaging. You will pay more,but that's because the version is legal.
Legal is the key word. Do you want the same kettle of fish you had?
Now to save money: Use the OEM version. If I recollect correctly MS lost a suit against the EU and must accept the use of the OEM version by individuals just like with the other versions. This suit originated in germany and went all of the way. MS does not like to speak of this.
Another solution is to use an UPGRADE version which is every bit as full as a FULL version, but is cheaper. Now I'm not going to get into a long discussion with anyone on these matters but I researched the matter, Paul Thurott researched and published the how, Ed Botts did the same.
We have a tutorial on using an upgrade version and performing a virgin install.
You will have people say, but...etc. believe me you will be OK.
Enjoy your OEM version.