Hi Scottscale40,
As you are from Poland, why don't you consider doing your EASA training in your own country? I've heard some good stuff about Bartolini Air in Lodz, the prices are extremely competitive as well, one of the lowest prices we can ever find that's for sure.
I've been looking into Aviator College as well, the prices seemed to be very reasonable when compared to others, in addition to the guaranteed flight instructor job that they offer upon successfully completing the training on time. However, I haven’t visited them personally so I can’t give any direct reviews about the school.
Feel free to share any other options you came up with!