I have a Dremel 200. A lot better than the underpowered 4.5V rechargeable model "pumpkin carver" Dremel I had as a kid that the 200 replaced; which was good only for super-light hobby stuff. I honestly prefer corded tools due to the fact that batteries usually last as long as they're being produced--meaning when they bite the dust, the manufacturer is no longer producing the tool or batteries.
Except, dealing with power cords when working away from my workshop in the basement can be a pain--need to grind to reprofile a garden tool--can't be past the garage. Yesterday, it was used to cut off a sheep's horn that was growing into its head--had to run over 100" of a power cord from the garage to the barnyard. And then, to find the smurfing $30 diamond head had been milled wrong, meaning it would not lock onto my EZ Lock head. Had to get the old, heavily used one out.
So, any models, both Dremel and non (honestly, I prefer the latter) I should look into that are cordless?