The original Mytee M5 came with some sub-par components, such as the vac hoses, water hoses, water inlet tube, dump filter etc. I replaced a motor in mine last week but it seems like a good, strong motor compared to what some of the competition uses. I replaced nearly all of my components with much better stuff, including the switches. I believe that Mytee is now upgrading their equipment line and using better components than what the original M5's had. If you are going to use ANY portable, you will have to be somewhat experienced in minor repairs and problem solving. If you cry like a banshee every time you see a drip of water coming out of the cabin, you are not prepared to run a portable. The good news is that, if you can wing a wrench, they are easy to fix; much easier than a 1000 pound belt flinging TM behemoth.
The Cross American portables that are being recommended by serfs like Vinnie must have changed a whole lot since the last Recoil I saw because it was one of the most embarrassing attempts of a carpet cleaning machine that I had ever seen. It was not even what I would call "professional". I cannot speak about the Edic because I have never seen one. Despite the problems you have been having with communication to Mytee, they are usually very good with taking care of problems. The owner, who is a member here, is a terrific guy. Compared to what I have seen from other owners and CEO's, he is in a class by himself but you seem like you are having a knee-jerk reaction, before going through logical steps toward a solution. Mytee's customer service has been unbelievably good in my experience.
One thing I would suggest to you is to remove all of those small double hose clamps in favor of a single, wide clamp on each fitting (much stronger). You also need to replace the water hose coming from the fresh water tank for a crimped, high pressure hose. I believe that Mytee has this replacement.
In the last year or so, Mytee has begun to focus more on quality so I expect these sort of things to stop happening. I also think this is probably an example of a child screaming bloody murder from a mosquito bite.
Best of luck.