Driving With a Pop Up vs Hardside??

A popup is better at interstate speed which will result in better MPG. The shorter height also would be harder to hit a low limb if that matters where you drive. They are also usually a lot smaller. If a popup suits your needs, I don’t think you can go wrong.

I wouldn’t put too much stock in their weights until you put them both on a scale. Some manufacturers are closer than others and some include all equipment and some don’t include any options.