I got my hands on a Deco 6er, and fell in love with it almost instantly. Having never played a 6er, and "lost"* my 5er a few years ago and not felt the need to replace it, i got it as more of a novelty. My thoughts where that id try it out, think "thats weird, way too many strings", and sell it on for cost. Turns out though that it turned up set up perfectly, and played better than any other bass i have.
I mainly play the middle 4 strings (the normal ones) and use the B and C strings for the odd note to stop me having to change hand positions for it.
*It got stolen by the drummer of the band i was in when/lived with when the band fell apart and he moved out.