I'm sure Sue and others will comment soon, but for travel, you can't beat the Pari Trek S, which you can buy on Amazon but a variety of other sources too. Just shop the best price. It's the one I use when I travel and hike. I bought the battery so I can carry it in my backpack when we're out for overnights away from power (with two batteries I could stay out a week easily). It also comes with an adapter to use in a car.

At home, I still use a tabletop Ombra, but a lot of folks I know solely use the Pari S.

Laurel