The safety razor is cheap as hell, and gives a much better shave than an electric, without the needless complication of a straight razor.
I've always had poor performance from disposables. I don't care if they were one blade, 5 blades, vibrated, squrited goo, had a "soothing strip", or whatever the latest marketing bullshit was. I never got a great shave, and I always ended up with razor burn and pimples.
I've tried electrics: The norelco rotary blades, the old standard electric like my great grandfather used...nothing would get all the hair/stubble. And I spent forever even trying. And you also have to deal with the annoyance and pain when it sometimes just decides to rip a hair out instead of cutting it.
My wife got me a safety razor a couple of years ago. It's been heaven. I get a quick, close shave without irritation or pimples. Sometimes, you just can't improve on the old ways.