Note 1 - When using the blender, it's best to use it in short bursts as the blades heat up and this could melt your sorbet. The smaller the fruit pieces the faster it will puree. Just keep an eye on it to make sure it doesn't melt.
Note 2 - Adjust the sweetness/sugar level by adding more or less sugar syrup. If you don't like sweeteners, you can substitute it with just water, or orange juice (or any kind of fruit juice).