Mavis Beacon Teaches Typing 17 94fbr Which Software Should I Purchase Mavis Beacon Teaches Typing Version 17 Or Version 15?

Which Software should I purchase Mavis Beacon Teaches Typing Version 17 or Version 15? - mavis beacon teaches typing 17 94fbr

I'm trying to improve my writing. I want to write faster to see (without the keyboard) and accurate, but I do not know which version. This one is better? I must buy soon. Thank you for your help!