he M330 and Duo-Mix are by far the leaders on the market for mixing technology and quality - if you're really in the know you'll understand the benefits of water dispersion and dual-action mixing technology which the Duo-Mix offers.
You'll also know as standard, both of these machines will pump further and faster than any other machine. The M330 can even have a variable speed added to it without the requirement of the operator adjusting the water when the machine is sped up or slowed down - the machine does it for you! Again, this isn't possible on other machines.
The reason the M-tecs are often higher priced is due to the exact reasons mentioned above - the technology and quality. Single action mixers, such as the EZE K4, which is on par with and a copy of the G4 is actually considerably cheaper - like for like machines, yet a huge difference in price. With M-tec you pay for the tech
Quite often, the problem with M-tec's is they are complicated machines that require looking after - no denying it, and those who don't look after their machines (which is common) have problems due to material probes and sensors. If you don't look after the machine, you'll get issues. Basically, keep it clean and do what you've been instructed and you won't have an issue.
Single Action mixers have huge limitations, when sped up, the mix quality lowers/decreases unless additional parts are added, then still, isn't the best quality. This can be evidenced quite easily through issues with unmixed material when using faster Rotor and Stators.
It would be interesting to see how many people who cast opinions on both brands have actually used both and have a true understanding of the functionality and operations of both. I can safely say I have sold both, continue to sell single action machines, and have also operated, repaired and serviced all.
Remember, we sell single action mixers such as the K4, it is our own brand of machine (made by Kaleta under our specification) so I can offer experienced views on all.