Woodworking, DIY power tools, curve saws and circular saws, which is more practical?
You need a good saw and a backer to see it straight, but this is also relative. It must not be better than the circular saw. You may have to buy two or so as to make the best use.
Their use is different, can not be replaced, the curve saw is mainly cutting arc, cutting straight line can also, but the performance is too bad, electric circular saws are mainly cutting wood, wood side, sticks, etc., convenient and quick. It's not what a curve saw can do.
If you have to buy only one, buy a curve saw, because DIY means that your workload will not be too large. The curve saw can see the curve, the straight line can also be saw, but the technical requirements are higher.