Yes, in a way at least, as with all things there are always good and bad products, if your looking for a good cheap brand then Data Safe are very good usually, as are Infiniti and Verbatim, but steer clear of cheap no name brands, they often have issues with some hardware, another thing to mention is - format is more widely usable, + format tends to not like a lot more players than - do, so unless you need\want + format for some reason I suggest going with the - format.