For a single cup, it's hard to beat the aeropress. I brew normal (not inverted), use 16g of a nice, freshly ground medium roast, 30 second bloom, fill, stir, insert plunger, 2:30 steep, & plunge. Same cup of coffee everytime.
Mrs. Boreal prefers more like 11g, so it's nice we can both have our morning coffee how we each like it.
It's my go to for travels thanks to the simplicity. At home I'll usually go for a nice double ristretto to kickstart the day. My wife doesn't drink coffee whatsoever, so I've got the full freedom. Minus getting budgets approved... ;-)
I do love a good ristretto... One of these days I'll get an espresso machine. Pending budget approvals of course. Though, the Mrs. loves lattes, so there's a good return on investment.
After that, the aeropress will love on for camping and travel.