I just tuned my bass down to D, to give you an opinion. I use
Fender 1920s, they work good tuned down to D, low D# sounds farty, a cool

farty that is, but when tuned to standard E, low F sounds farty also. (I love using that note because of that sound.)
All the other notes sounded fine, no buzzing.
Fender 1920s are only $20 at MF.
Bill