The advantage of DM over their competitors is that you can carbonate every type of drink. Is it a big deal? Yes if you want intend to. Else, I would stick to Sodastream. The carbonation of SS is more consistent and better.
Thank you for the honest review, Albert! Both SS and DM have similar working bottle pressures, so you should achieve similar results in the Drinkmate. For more fizz, simply add an extra 1-3 pumps after you get the initial gas release sound, depending on your carbonation preference, and your drink should be well carbonated!
Drinkmate (Royal Red) Sparkling Water & Soda Maker