I've had issues with SanDisk, Kingston, PNY, all of them. Never tried a Samsung.
Used to get corrupted data all the time on my HTC TouchPro2 and P4000 but they had issues with the USB connector so I thought it was related to the phone constantly switching in and out of card reader mode when connected to a PC (usually just for charging).
Recently I went on a trip to the Yukon and ran a dashcam in the form of a Drift HD170 Stealth and one day it turned up corrupted and lost all my video for the whole day. Luckily I was able to recover it with some software.
Just the other day I was using my Note2 and decided to check some files I had on my 16GB SD card that was about 12GB full. Nothing on the card. Tried to recover it and found a few large files (mostly movies and a couple of PSX ISOs) but all the photos I had on it were gone. Luckily they were just a few of my favorite Draw Something sketches I had saved (most of which I had put on FB so it's even less of a big deal) and I had left most of my other photos on the phone itself so that's ok but I definitely could have lost a lot more, especially if I wasn't so used to having to recover data from things.
Was worried I lost all my progress in Chrono Trigger that I was playing through on the phone but the save files are stored on the internal memory so I'm ok since the ISO recovered.
Maybe I'll try a Samsung brand card next.
Factory unlocked Samsung Galaxy Note2 N7100 // Stock
Telus HTC Touch Pro2 <-- Dead
Telus HTC P4000 <-- Dead