I usually use Hallmark's greeting card paper and like it a lot.  Avery's product is equally good.  It is a true matte finish, so if you want a little more shine, this isn't for you.  The stock is thick enough that the printing doesn't show through and the fold is neat and professional.  No need to buy pre made cards if you have these on hand.  I use American Greeting's printable option a lot but my kids like to make their own cards with it.  They look much better than trying to fold your own card stock.  I would highly recommend these.