Smart Money magazine did a review of portable grills and they liked the Coleman Roadtrip LXE the best. But it was just one guy doing the reviews, so I don't know how objective it is.
Things they/he liked were that it was good for searing (high heat), very portable and has 2 burners so you can cook at 2 different temperatures.
He wasn't nuts about the weber Q because it is built for slower cooking. I guess you can't turn the heat up really high?