Do i really need a 3 grand gorlitz?

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Im a in my baby stages if plumbing. Good enough to go out in my own. Still young enough to cry when people tell me to "figure it out good luck" Man I was inherited bad equipment for drain cleaning. There are 3 gorlitz machines that were just destroyed by retards. Sucks because they look like they should be perfect for what i need. But might be overkill. I was.wondering if im doing mostly 2-3 inch branch lines and 75 feet of 4 inch mains. Could I just by 2 of the rigid machines from home depot...