I use an electric razor. A Philishave 6885, with three circular foils (as opposed to ‘bar’-type foils).
Time to maintain depends on the razor itself. I simply rinse mine under the tap once a week, and recharge it maybe once every three. Many razors, especially the bar-foils, are more fiddly than that.
Cost of maintanance - Depends how good you want your shave. The circular blades take about a month to dull slightly, after which the shave quality decreases somewhat, although not greatly. They say you should replace the blades every year (approx. A$60, your cost will vary), but I usually replace mine every second year. I’ve been using various electric razors for 12 years, and I’ve never had one break down.
The feeling? Not as close as a blade. I’d suggest not shaving in the morning, then going to your electrical shop and testing one to see if you find it acceptable. Also note that most electric razors need bone-dry skin to work acceptably. If you’re even slightly sweaty it doesn’t grip as well. There’s a difference here between bar- and circular-foils - bar-foils are supposed to be better for most, but I find circular foils work better for me.
Irritation? None with the circular foil. Because the blade’s not scraping your skin, it’s not an issue. With a bar foil I had some, but nowhere near as much as a blade. You won’t need aftershave, which to me is the main advantage of an electric shave - I hate artificial scent, and having it on my face isn’t acceptable to me.
I’ve never had a problem with dirty skin that needs to be shaved off.