Others say...

"Sunbeam Hot Shot"
This is a great time and energy saver when you need a cup or 2 of boiling water. Only 1 negative but it comes into play every time I use it: Unlike the older model, the cup area is too short for very tall mugs, and when dispensing, you can't tell when a mug is full because the top of the mug is too close to the dispenser. If you need that functionality, try to find the older model... it's taller and white.

"Additional point"
I came here to write essentially what Elliot wrote below -- the Hot Shot product description does not seem to indicate vertical space for your mug, and the photos do not really show scale. So if you have a tall mug or thermos and do not feel comfortable modifying your Hot Shot, you might want to consider other options. (However, it does come apart with a screwdriver so all you really have to do is mount it to something taller).

The point about not plugging it in before pressing the power switch is correct -- for the first use, that is. The device shuts itself off when it finishes, and you can actually leave it plugged in at that point. At least, this is what I've been doing for the past week since I first got it and I'm still happy.

One final comment: If you're in a hurry, be sure to contact the third-party seller if you can before ordering this product. Amazon showed it in stock when I had placed my order a while back, and it took the third-party (Polsteins Home & Beyond) over a week to inform me that they did actually not have any in stock.

"This replaced my old Hot Shot"
Great product! I've owned one of these for probably 5 years, and I go through 10-15 cups of tea a day (at least!) I have no complaints about my old one wearing out- it still heated water just fine, but had slowed a bit over the years, and the plastic grommet at the dispenser hole developed a leak. Bought a second one for our summer home too!

"Quick and convenient"
My wife and I have used the Sunbeam "Hot Shot" for quite a few years now. It's just the two of us, and my wife cannot drink regular coffee. This makes the Hot Shot a very handy item to have. You can heat anywhere from a regular coffee cup sized portion up to a travel mug sized portion in less than a minute, making "instant" coffee truly instant. It's a great little product, and we'd recommend it to any one.

"2nd time owner. Disappointed because of the plastic taste"
I owned one 10 years ago and it was great. I decided to get one again because I am a big tea drinker of expensive Taiwanese high mountain tea. I am so disappointed with the new model because the plastic taste is so strong that it completely changed the taste of my tea. I have been cleaning the unit with vinegar and baking soda and now the odor is about 50-60% less, but I can't accept any weird taste in my expensive tea!. If I can't fix this in a week then it is going back to Amazon.

This product will heat up water fast but don't get it if you can't tolerate weird taste in water.