I decided on a cat tarp for this year just because while I prefer a flat tarp normally I didn’t want to have to think too much about setup after long days – especially since I’ll only be setting it up when the weather is rough and I’ll want it up quick. Also with cuben the general consensus seems to be that cat works better as there is no stretch to the fabric… I’ll see how I go, very likely I’ll sell the cat tarp after the hike in favour of a flat tarp for when I’m a bit more relaxed about time…
In terms of size – I went for the grace duo as it had a listed weight of less than 2oz more than the solo but would allow me to not carry a bivy (will take a 3oz S2S nano bug net) … I’m also 6’3″ and didn’t like the idea of how low a solo tarp may need to be pitched in inclement weather…
Edit: 2016 pricing and weights on cuben grace tarps has been updated… 0.75 option is now heavier than the one I bought – that might be updated design or just a more accurate listing… or was it previously 0.7 not 0.75? Anyway, the delta between solo and duo is now 2.5oz in the ‘traditional’ cuben… still a strong case for the duo