I do wicklkess and tarts. The tins do get hotter, but that is good in my case because I use the cheapo Hobby Lobby warmer, which really isn't all that hot. Melt pool with a shallow jar is about 155-160, with a flat 4 oz. tin it is 175-180, which I find to greatly increase scent throw. At 155 with the glass, the FO has to be very good to throw. Keep in mind, however, that the jars have a lip around the neck, which makes them a little more stable and safe. The sides of the tins go straight up down and seem a little more dangerous. I am about to invest in a warmer warmer (ha, that's funny). I've also thought about doing 8 oz. tins and filling them only partially to make them safer. HTH!