I too use a shelter that requires trekking poles rather than regular poles and I just wouldn't go back to a traditional tent because of the weight and ease of setup that these types of shelters provide.

In the majority of the three seasons I will use Gossamer Gear's SpinnTwinn tarp and in the winter where I expect moderate snow and/or strong winds then I will use my MLD DuoMid. Both of these I use with my TiGoat Bivy. Both set-ups with bivy and line included weigh around 20oz-- give or take a couple of ounce.