Which Google Merchant Extension Feed to purchase?

Hi There.

Some help and guidance with this would be much appreciated.

I am currently looking to choose an extension for Opencart for my webshop to generate the feed for product listings ads.

It is in several languages and currencies and I want to submit feeds for each of the different countries to Google

I need to select a feed extension that will

1. Support all the countries currently available at Google including Russia, Poland and Turkey.

2. Allow me to create multiple feeds - one for each country.

What do you recommend? I have looked at some of the existing feeds but not sure that they will allow this.

Tom

Anyone?!