I am making candles for friends, teachers, neighbors, etc. this year for the holidays. I made one test candle and had a lot of fun with it. I have a couple of questions regarding fragrances. First, I see many of you all order scents from suppliers on-line. I was getting my fragrance and other supplies from Michael's Craft Store. Is that okay or is there a difference in quality? Second, I purchased a hard fragrance brick to scent my candle at Michaels. I followed the directions but the scent was negligible. I would need to at least double it. I see many of you all using oils instead of the brick. Is there a significant difference between the two? The oil seems easier in my mind. Thanks!