There’s no hard and fast rule for single reed or double reed being better than the other, and as with many things in life, it all comes down to whatever you prefer and which style of duck call works best for your situation.
If you’re an experienced duck hunter, we can assume you’ve done a fair bit of research into which reed works better for you, but if you’re a beginner, we’d recommend trying both single reed and double reed options to find out which one feels more comfortable.