Go with the converter. Spent 3 years in West Germany way back when and all our 110v equipment worked just fine with a converter. What you have to really watch out for is the frequency. Here in the states, we're use to 60 hertz. In Europe it was 50 hertz, so anything that was a timer or clock or anything that depended on a reference time need adjusting. I don't see you having that problem with the MES. A suggestion, if you're anywhere near U.S. military personnel who live on base or on the economy, they have these converters and usually are looking to get rid of them when they rotate back to the states for dirt cheap. I know I sold several for much less than I paid. Your problem is not uncommon and the solution is much easier. Be sure to get the next wattage step up (2000w vs 1500w) from the MES rated wattage. Always good to have that cushion. Don't be a stranger now, let us know your adventures. As I remember, Poland has a strong beef industry.