**Edited a month later to add: I realize now that I have the XL version of this tool. That may explain why I haven't had the problems that some people are experiencing. If that is the case, get the XL because the slightly larger size and wheels might be making all the difference!**
Honestly, I wouldn't leave a review for this item since I didn't buy it on amazon.com except that I'm buying a new one and I saw all these mixed reviews. My first one I bought from Williams Sonoma even though I'm not a gadget person, as others have specified. It's just that often garlic is the one item that I needed 5 seconds ago as my sauteeing onions are beginning to burn. I thought this would help speed things up and it did! Also, I hate to chop garlic super early on because that means the garlic and the knife I will later use will sit on the countertop where my children are always messing around. It just freaks me out to have a knife laying on the cutting board with my children so present in the kitchen. This garlic zoom got me my garlic in less than a minute and there was no knife needed in what is usually the earliest step of cooking dinner.
I would like to add that my children help me to "chop" the garlic now. They love using it because it's cute! And they can use it! I don't know why so many of them are sticking or not working for other people. I use it on granite counters or on wood cutting boards and it works great. Yes, sometimes it gets stuck on a clove but it always works out as I or my children roll it back and forth. I have never noticed wheel marks or big wastage. It comes with a little scraper so when you need to take out the chopped garlic, you open it, flick the garlic pieces off of the blades (to use), remove the blades, and use the scraper to scrape out all the garlic inside the body and inside the lid. (I don't let my children do this part though.) This gadget has helped make using garlic a non-time intensive step in cooking.
My only complaint on this item is that sometimes garlic pieces get inside the top lid where it's hard to get them back out and clean. Otherwise, I would still be using mine. I ruined mine by not noticing the blades going down into the garbage disposal and I ran the disposal which effectively tore all the blades off the spindle and bent them.
In summary:
1. very fast to use
2. very easy to use; my 5 and 3 year olds help me use it (maybe the 3 year old needs help half the time)
3. can chop several cloves of garlic at a time (I think I did 6 once)
4. it is not the easiest to clean
5. there are small pieces (the blades and the scraper) to get lost or ruined