looking to do apps2sd and looking to upgrade to a 16 gig card.. been looking for card reviews and can't seem to find the info I was hoping to find. Mainly wondering about the quality of cards that cost $40( patriot, class 10) and those that cost $90(kingston, class 10) also wondering if I really need a class 10 or would a class 6 do fine also? Thanks in advance for any info ya'll can provide!!