I don't know what your application is, or what zip ties you've been buying, but I find that for general purpose use the Commercial Electric ones from Home Depot are just fine and reasonably priced.
https://www.homedepot.com/p/203531924But please, for the love of knuckles and fingers, get a proper Panduit gun to pull them tight and clip them. I hate slicing my hands dealing with things people have cut the tie wraps with side cutters on. The gun is faster and easier. Anyone dealing with racks and cable bundles should have one.
^^^This. A carelessly trimmed zip tie can draw blood.
I don't have the Panduit gun, but I've got a pair of
Klein "Kurve" #63020 cutters that work fairly well for cutting the ties. To trim the tails, use the tip of the cutter with the anvil against the "latch" of the tie so the blade skims the outer face of the latch, shearing across the width of the tail so it's trimmed flush. That avoids a sharp edge on the tail.
You can also use the shear on the cutter to open a tie by cutting across the latch, avoiding the danger of nicking a cable.
Probably not as good or convenient as the Panduit gun, but a thousand times better than what a pair of sidecutters leaves behind.