Mundial Red Dot - Pinking shears are good a choice if you looking for good quality shears
or if you prefer a rotary cutter then you could go for an Olfa Rotary Wave Cutter 45mm WAC-2,
A thing to note about the Rotary cutter is that it cuts a wave pattern with rounded corners, compared to the Mundial Pinking Shears they cut very well with pinking (zig zag effect).
However if you want to make lots of fabric swatches or other samples, on a bigger scale then you need a sample swatch cutter gillotine, a fantastic machine for cutting samples with pinking ( zig zag edges). not a cheap machine, but a great tool.