You can go for Tombow mechanical pencil or sakura mechanical pencils.. but if you want premium product in other brand then... you can check uni koru toga. ☺️👍
Pentel and Tombow are the best brands for quality.. you can choose any... If you are using for drawing. But both are little bit costly. For normal uses and practice go for camline leads ... Easily available in local shops and pretty cheap 👍 but don't use them for drawing. For drawing you should buy atleast staedtler leads.👍