I guess I'm getting old because I tend NOT to be impressed by much of anything AND I remember when electric mattress pads and blankets were a mess of hard wires embedded in a cheap peace of cloth. This matress pad has such even and natural warmth with no hot or cold spots, and I'm really impressed with the fact that the wires are indiscernable. I was worried I might be wasting money buying this more expensive version to the cheaper one on overstock that people were saying had some issues, but I couldn't be more pleased. To be honest, I just use this to warm up the bed before I get into it and until I'm comfortable enough to fall asleep. If I sleep with it on all night, I tend to wake up at some point too hot because my body starts generating it's own body heat and I overheat under my heavy comforter. I wanted a good electric mattress pad to get the bed warm before I got into it (takes about 20 minutes) so I didn't spend the first half hour in bed tossing and turning trying to warm up the sheets. PERFECT CHOICE.