I have used the inertia ozone mat for some years. It has been comfortable for me and packs away very small. BUT the first one tore badly with no apparent cause and the replacement mat I bought also developed a small tear, again with no obvious cause. Both mats tore when in use in my tent so no obvious reason for the damage.
I have now gone back to a Thermarest even though it takes up heaps more space in the pannier as I have not had leak problems with them.