if, like me you use a tape once, then keep it as a back up, then you really ought to buy this product - brilliant value, and i've not had a single one give any artifact issues when caching - why spend twice the price on other brands???
Have purchased these many times, from Amazon and elsewhere. Very good quality tape, some used once, other's used more than 5 times (before finding them cheaply), with no problems at all. Heartily recommended