Overall, I am happy with the blender, but it does leak. I use it every day. It's very convenient. I chop my fruits and greens and put them in the container the evening before then put it in the fridge. I take it out in the morning, screw on the blending blade and blend my drinks in the mornings. I take 2 green smoothies and a protein shake to work every day, and this works well for that. The only thing is that the "lid" with the blending blade attachment leaks down onto the motor compartment during blending. I blend my smoothies then take them to work. Before drinking, I shake them, but the lids, no matter how tightly I screw them on, leak. I have to hold the plastic glass away from me when shaking otherwise I splash myself with juice. 12-5-12 UPDATE: I am changing my 4-star rating to a 1-star rating and am now shopping for a new personal blender. The seal around the blending blade has really broken down and leaks a lot down into the motor compartment. When I lift the glass off the motor compartment, a stream of liquid (this doesn't happen with a really thick smoothie) continues to drip onto my counter and makes quite a mess, given the amount of liquid. Of the 4 lids that I have, on two of them, the inside seal - a plastic ring on the underside of the lid, is now detaching. As I explained before, if I shake my smoothie before drinking it, some of it will splash out even with the lid on. I am now shopping for a new personal blender - different brand - because now the leaking and splashing are getting much worse. I don't recall exactly when I bought this but I know it was the first half of '11. So it lasted me about a year wo any problems. 2-20-13 UPDATE: I had to throw my blender in the trash. The blending blade became loose and would slide up and down within the screw-on attachment. While I was blending a smoothie last week, the blade slid up such that the "teeth" on the back side of the blade were no longer securely fit into the "teeth" of the cradle of the blending motor base (I hope I am making sense here). So when while I was using it, the fast rotation of the blending motor teeth shaved off the top of the teeth of the back of the blade, having the same effect as stripped gears. So the blade would no longer rotate within the motor base and therefore would not blend. I bought a Nutribullet, but I thought that was a little more than I needed given that I already have a Vitamix; so I exchanged it for the Magic Bullet. I have only used the Magic Bullet 2 days so too early to tell but I like it so far. I think the Tribest may have been slightly more powerful but the bullet seems to be sufficient for what I want it to do. I use my vitamix for heavy duty blending. 5-28-13 UPDATE: I LOVE my Magic Bullet. I highly recommend that instead, either that or the Nutribullet, which is much more powerful than the Magic Bullet. I had the Nutribullet for only a few days, but I did use it a lot during that time and thought it seemed to be a good substitute for the Vitamix if you don't want to spend $4-500 for one of those. Re the Tribest product, I had kept the 4 plastic tumblers that came with it to store my smoothies that I made in the vitamix. It got to the point where the lids on those leaked so bad that I could not pick it up and shake it wo covering the top with a paper towel, otherwise juice would splash every where. I was constantly dribbling stuff on my clothing at work. I threw those away too. I have now tossed everything that came with the Tribest product. I got my MB at Target for $50. It came with 4 cups, plus a mixing cup, plus a smaller cup. I noticed the other day that they have a version of the MB at Cosco for $45 that contains all of the above PLUS 2 much taller cups (which I wish I had) and an extra blade. I have to pay about $15 additional to get the taller cups because they didn't come with the set that I bought, for $5 more than the more deluxe version that Cosco has. 9-24-13 UPDATE: Buy the Magic Bullet. I still love mine. It still works like new. They are at Target for $50 or at Cosco for $45, but at Cosco you get two taller cups that I didn't get with the one I got at Target. I bought the two taller cups here on Amazon for an add'l $18, which was worth it b/c I use this blender EVERY DAY. I wish I had known you get more for less at Cosco w this bullet. I take a cooler with 2-4 smoothies to work EACH day; so my bullet gets a lot of constant use and still runs like knew. If you want something stronger but don't want to pay close to $500 for a Vitamix, get the Nutribullet. I bought that at first ($100 at Target/I don't think Cosco has it), but decided I could do my tough stuff w my Vitamix so exchanged it for the cheaper Magic Bullet. The Nutribullet seemed to be very heavy duty, but I had it only for a weekend before returning so didn't use it long. 1-28-15 UPDATE: I had totally forgotten that I had written this review. I still have the same Magic Bullet and continue to use it EVERY day, and it still works like new. I bought additional tall cups but have not had to buy any replacement parts for it. The original blade still works great.