^ Depends on what you're doing. If you only rarely cut some straight or slight curve 90' lines in particle board or similar, a cheap one will work though your wrists might get sore from the vibration (or you get a shake reflex going on for a while after you're finished) if you cut for long.
If cutting something more like polycarbonate or metal, or really any surface where extra vibration may mar it even with a protective layer like masking tape over it, then you will want something counter balanced.
Either way if you're using it for long stretches of time you should get something with a larger motor so it isn't worked as hard, or stop and let it cool down periodically. Looser tolerances also mean you may bind and run through blades faster, but some of the cheapies are pretty tight too, again it depends on what you're cutting.
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If cutting something more like polycarbonate or metal, or really any surface where extra vibration may mar it even with a protective layer like masking tape over it, then you will want something counter balanced.
Either way if you're using it for long stretches of time you should get something with a larger motor so it isn't worked as hard, or stop and let it cool down periodically. Looser tolerances also mean you may bind and run through blades faster, but some of the cheapies are pretty tight too, again it depends on what you're cutting.
Thank you!