I researched a lot over the past week about this problem, as I plan to buy SanDisk 32GB Ultra for my T.
It seems that there was a batch of badly manufactured 32 and 64 GB versions of microSDHC cards, and SanDisk admited this, as you probably know.
But also, if you consider amount of sold 32 and 64 GB SanDisk cards all over the planet, I think that number of bad reports is still quite insignificant. Otherwise, Internet would be flooded with bad reports. I guess you have to be really unlucky to get a bad card.
I will take a chance and will go for 32GB SanDisk Class 10, as it is still the most secure option to me.
Also, on my last phone (Arc S) I used 16GB Class 10 for year and half flawlessly, with no single error. And my phone was too hot for so many times, so I guess heat is not having any damaging effect on these cards, as some people suggested.