Steam roller or a bubbler? It will be for me mostly. Then 1 or 2 friends. Basically wherever I go or whatever I do haha.
Bubbler if you're gonna get a good one. One where the water chamber is big enough so that if you accidently tip it your bud won't get all wet.
I would suggest a bubbler. Steamrollers are awesome for what it does but i prefer getting some water filtration to smooth out hits.