Awesome product and short of constructing your own solution, this blows the competition away.Pros:- Super easy to use. Plug and play, no configuration.- Compatible with major CO2 cylinders at the grocer, etc.- Consistent product each time and long lasting.- No specialized bottles required.Cons:- Water tank only holds around 1l of water, which means if you're drinking a lot of sparkly, you're going to constantly be filling the tank.- The product only works well if the water is chilled. Room temp/tap water simply will not carbonate as expected and this is explained the manual. You need to add ice to the tank or just keep it in the fridge. I fill mine after each use and stick it back in the fridge.- I love how this thing is packaged and assembled, it's really nice and doesn't feel cheap, however the mat it comes with makes it impossible to move if you need counter clearance, etc. (it's VERY tall). I ended up cutting some parchment paper to go underneath so that I can slide it and access the tank.I think this product is expensive but only as expensive as the top-tier competitor products. I found a machine that also chills your water, but I didn't feel like paying over $600. I do wish the carbonation was adjustable and you must keep chilled water for it to be effective.Overall 10/10 for me. I'm addicted to this product and have 4-5 large glasses/day.