Even If you barely touch the B to D# on the B string, the five string gives lots of options to play Box positions at different parts of the neck, coming down to the E at fifth fret on the B gives slight tonal differences and more variations. Stick with It. I agree jumping from 4 to 5 and back gives brain ache. I now have a few 5 strings and never use my Vintage Jazz.
I thought that dropping a fifth down onto the B~string was pretty cool, just those notes you don't get to play on a 4 string.
