I was wondering what the difference between different 32gb micro sd cards are. I was looking for new ones on ebay under the buy it now section. On ebay SanDisk cards are all $85-$100 while cards made by Kingston and Transflash are $50-$60. I was wondering if the micro sd needed certain specs to work for the droid phones, more specifically the droid X. Would the cheaper Kingston and Transflash suffice? The 16gb card preinstalled doesn't say SanDisk on it and was also wondering what the make of this card is.