Good choice. Add reliability/simplicity to the positives. We have ongoing issues with our roof lift; I'd love to upgrade the actuators but not so simple or cheap once you're overseas, not to mention expensive. Hard sides for us next time.thanks for your thoughts every one, i have decided on a full hard sided box with a internal head height of 1900mm and external height of 3000 including solar panels. No going back now as panels are ordered.