Can you tell me which English studying software is best And how much is it

I know a English studying softwarenamed '易学U-Strokes Easylearning'pretty good!
I use it for half a year , and my English improve quickly .
I also introduce it to myfriends ,they love it very much ,
And it's not expensive at all, only 920you can buy a set .
Hope you will enjoy it ,and improve your English skills!