frankly, the only good and extablished brands are sandisk and kingston. sandisk of course no need to mention, but kingston is the leader in computer rams and all kinds of memory stuffs, cf and sd card are just peanuts technology to them, too simple for them to make good & reliable ones.
but for ridata and transcend??? transcend maybe ok, they have a slight reputaton in the computer ram market, but ridata???? i dun understand why ppl dare to rely on brands like ridata, unheard of in many fields, at least to me.
however the one that disappoint me the most is lexar, dun wan talk abt this brand anymore