While I'm currently using the brush head that came with the toothbrush (which is another bonus, as it really does come with everything you need), including a travel case. You can buy a number of ...

I rated the Oral-B Pro 3 the best electric toothbrush in my round-up ... this set comes complete with a travel case and three replacement heads, along with a magnetic click charger and charging ...

I own one of the more simple toothbrushes (which is a solid budget pick below), the Oral-B Pro ... to get toothbrush head replacements in bulk and just swap out the toothbrush heads from time ...