Very good question... Personally I would choose immortality as a cyborg, life is a lot of fun.

Personally, I would say that as life is "but" an interaction of permanently shifting conglomerates of matter, death itself is not so much an end, but "merely" another transition of the latter. Hence I find myself unable to give said "Cyborg-Death hybrid" much of a meaning; aside from possible partial cutoffs of individual cyborgs (the implants, for instance - as if to temporary get close to the original "human condition"; or the other way around - as if to get rid of it) resp. whatever one chooses to define as "humanity".