I'm currently using Sony's Premium Mini-DV Tapes and to date have been very happy with them. As my stock is running low, it's time I bought some more. I notice that Sony now have 'Excellence' tapes that are more than twice the price. My question is this. Are these tapes really worth the extra money and would I notice any difference in my recordings? I only ever use a tape once, so if the only difference is that they are more durable, then I probably won't get any benefit out of them. Any help / recommendations? Thanks.