I have 2 32GB Transcend SDHC memory cards. * See the attached image The first thing I notices is that formatting the 'red' card (without 300x written on it) in the Panasonic GX7 was VERY slow (roughly 4-5 seconds). Formatting the 'blue card' (300x card) was much faster (about 2 seconds). Both cards format in less than a second in the Panasonic G5 with no discernible difference in speed. The second thing is that from quite a bit of video I took with the GX7 and the 'blue card' (300x) it gave me twice a message about 'the recording will stop due to slow memory card' or something along those lines. This happened a few minutes after the camera was turned on, not a hot day, not after shooting continuously etc., the memory card was fairly empty and is always formatted in-camera. I have no idea what's wrong here. So... is there any GX7 user out there who can recommend me a 32 or 64 GB card that works flawlessly with the GX7? I must admit I had various brands of cameras and memory cards over the years and never had such weird issues. While I won't nitpick this, I just want a card that's known to be reliable with the GX7 so I won't lose a special video in the future with that weird recording. Thanks guys!