The helmet issue is a complex and simple.
The rural helmet is designed to be worn for long lengths of time, whilst offering radiant and impact protection, the impact protection includes the helmet giving/moving when impacted and even coming off in some cases. This concept is the same as hard hats worn on any industrial site, light weight, giving/moving/deflecting.
The structural helmet is design to give greater radiant and impact protection without giving/moving, with weight being of secondary concern.
So if we assume the rural and the structural helmet both give radiant protection fit for purpose.
The weight and impact protection is were the issues seem to be, the rural is designed to deflect and dislodge impacts, whereas the structural is designed to remain in place when suffering a impact, this can transmit greater force through the impact recipient than if the helmet were to deflect, but the helmet remains in place.
The weight issue in my opinion is a non issue, toughen up princesses.
So no opinion "just the facts mamm"
Now as far as looks go, its a no brainer, the structural looks the business and the rural, uuuuummmm well.. its got a nice....... personality