I haven't found anything that compares to the thorofare for low weight, comfort against the skin with the bonus of decent weather resistance. If I have to replace them (I still have two pairs left in the closet) I would consider one of two pants. My Arcteryx Rampart (waist 32") weight 9oz a bit higher than your target... but in my experience they have a fantastic fit, are well finished and so far has been pretty durable. After the amount of wear my Rampart pants have gotten, the Thorofare would be pilling. The other option would be light wind pants. It's been years since I have used any, but the Montane Featherlite windpants worked pretty well as something I could quickly layer over my legs. So long as I wasn't hot/sweaty, the material was fairly comfortable agains the skin.