Swede Magres

I have tried to grow decent swedes on my various allotments for many years without much success. I have tried numerous varieties but never Magres? I asked google what variety of seed the farmers grew for human consumption and these were what are appaently used?

The farmers close by grow fields full of wonderful swede which I have never been able to emulate.

I have ordered a packet, and hopefully Magres will assist me in growing what up until now I have been unable to achieve!