When choosing a hand blender with a detachable feature, there are a few things to consider:

1. Power: Look for a hand blender with a motor that's powerful enough to handle the tasks you have in mind, such as blending soups, smoothies, or chopping nuts. Generally, a motor with at least 200 watts of power should be sufficient.

2. Detachable design: Make sure that the blender has a detachable design, which will allow you to easily remove the blending arm from the motor unit for cleaning.
   

3. Attachments: Consider what attachments come with the blender, such as a whisk or a chopper, and whether these will be useful to you.

4. Blade design: Check the blade design to ensure that it's effective at blending and chopping without damaging your cookware.

5. Size and weight: Consider the size and weight of the hand blender to ensure it's comfortable for you to hold and use for extended periods.

6. Brand and reviews: Check the brand and read online reviews to make sure the blender is reliable and has a good track record with customers.

Overall, when choosing a detachable hand blender, it's important to consider your specific needs and preferences, as well as the features and attachments that will best suit your cooking and blending needs.