I have a few tarps. The first ones I bought were Kelty "Noah's tarp"s in different sizes. They are too heavy for backpacking IMHO but are ok for camping from car, boat, or pack stock. I have a Seek Outside DST which is pretty cool but being silnylon, a little heavier than it has to be. For backpacking, I like cuben fiber / dyneema. My favorite is the M-L-D grace tarp, duo size. I have not tried the one person. I have their monk tarp and IMHO it is just a little too small to be really useful for sleeping under but it makes a great awning for a regular tent. I carry it sometimes for a sit-under shelter, not a sleeping shelter. The last one I have, which I haven't used much, is from ZPACKS, a hex cut flat tarp meant for hammock campers but it seems to work from the ground as well. Nice thing is the length is enough that you don't have to worry much about your head or feet getting wet if you scoot a bit lengthwise at night.