I'd say go for the "cyberbrain
" and be the envy of every geek out there—way ahead of the curve. Of course, you won't have any shiny hardware to show off, but you can quote your favorite River line, "I can kill you with my brain."
"The crime scene investigators say someone hacked the driver presets on the victim's car, pushing the seat forward into the steering wheel and crushing his ribs."
(If you're worried about the NSA hacking your
chip, you can always have it externally mounted, but people will say you have a chip on your shoulder.)