I wasn't completely certain of your question. If you mean the e-card as in the type of greeting card that gets sent by email, my favorite type is the simple, non-animated kind that doesn't play annoying music. Just like opening a regular card, in fact. I also think the best kind would be NOT just for special occasions like birthdays, but for any occasion. I also think there are all too few cards that would be suitable for a wife to give a husband (or any woman to give a man, for that matter). So a masculine style of e-card would be really good.