I bought the promixx but i'll be honest it is absolutely rubbish with lipotrim, lol the shakes are too thick it doesn't blend it well at all I much prefer my whisk ball shaker it's easier and does not require any batteries, however, the promixx looks awesome and once I have dropped the weight I plan to go to the gym anyway and drink whey proteins which are a lot less thicker and will be ideal for the shaker, plus they will probably impress everyone in the gym lol so it wasn't a complete loss of money haha but yeah i've just been using my whisk ball shaker!