Did the 10-pack buy because the price was really convincing, but because of the size hauptzächlich Engen, because they had to fit into a rather long and narrow frosted glass screen. Unfortunately, the base is very warm, which is certainly the reason for this is that the bulb from this dissolves (I guess glue burned or melted) and the electronics will suffer. Have a 5er Spot chandeliers in the living room so equipped and within a short time (about 2 - 3 months) already have to replace 3 pears. Maybe s is yes to quality variations in the production, the holding other pears until now. Brightness and color are good, a little whiter than with ner ordinary 40W bulb.