tennis tutor plus

Can someone please give me some info on which one you think is better? (ball machines)?
Which one is better for the price. I am an avid tennis player. I am 14 and i play everyday. I want something that will give me a work out and improve my game. I’m concerned about the price but its not the biggest issue. I just want to know which one is better for the cost and its features: The Tennis Tutor ProLite or the Tennis Tutor Plus. Thanks..
I don’t know which is better of these two, but our club has a Tennis Tutor ball machine that is battery operated, and we have had lots of problems with it. One motor stopped working after 3 months, and now in less than a year, a charge only lasts about 45 minutes. I would get one the doesn’t have a battery, and must be plugged in, if you have an outlet to plug into. There are many types of machines out there to choose from.
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