I wouldn't look at Bartolini Air, they are too new in the business to have a big enough reputation for your CV to be looked at by recruiters. Plus, the being in Poland doesn't hold well for weather.
Hi SP, I don't know if you have any direct experience of Bartolini or are just making it up, but my experience with them was entirely positive. Did a CPL/IR/ME course with them in January / February and only lost a couple of scheduled days of flying due to weather. One of the guys I was out there with got himself a job with Ryanair almost straight after completing the course.