I've had the Solia Flat Iron (1 and 1/4 inch) since sophomore year of college. It has survived falling on the floor and several moves. It still heats up very quickly, and the heat is distribution is even. I use it on 370 degrees for my wavy hair, and it straightens quickly and makes it soft. I actually ordered a Solia 1 inch for the purpose of doing curls with it, but it DOES NOT WORK as well as the 1 1/4 inch. Not sure why; they may have changed the manufacturing process. The 1 1/4 inch one I bought in 2009 worked better than the 1 inch I bought in 2012. I returned the 1 inch. Back to the 1 1/4 inch flat iron. I have very thick hair, and it is wavy. I live in a fairly humid environment (very humid in the summer), and I have no problems with my hair reverting back to waviness. Unless I've been sweating, but that's my body issue, not an issue with the performance of the flat iron. My hair is very soft after straightening with this. I prefer not to use a heat protectant (bad, I know) because I don't like the way it makes my hair feel. I don't have terrible dry ends or anything, so this flat iron has served me well and has not ruined my hair. I love the design, the blue plates, and everything else about it. I think it straightens faster than a 1 inch would, even though you can't really do curls with it since it's a larger plate. I hope it never dies because it's my favorite.