A review for Sample Pack by Ted Brockwood.
Ordered a sample pack, and found the quality to be excellent. The stickers appear very durable, colors are vibrant and they don't look like they'll wear out easily. The one concern is that it's not that easy to get the backing off without causing some wear on the edge of the sticker. Would be better if they did like other stickers and had a split down the middle of the backing for easy peel-off.
I'd still order from Sticker Mule any day!