As with any tool... I think it is important to ask opinions of 'users' of the tool your interested in. A bonus too if the user is able to compare with other brushes.
I take opinions with a pinch of salt when tool opinions start with, " looks cheap......" or "looks heavy...." or "looks like it would break..." and more often than not is followed up with a discredit of some sort - not all but sometimes. The operative word is 'look' but never the word 'used'.
I would be more interested in those that have made a purchase and gave it a good go. I would weigh this up with how many 'got on with it' and 'how many did not'...... I would then ask 'could this make a difference to me or my work?' - Cost is the last thing I weigh up. The cost has to be relative to the answers I find.
You might want to include YouTube in your research too.
The Constructor brush comes with a 'Reach-iT' technique. Sadly, knowing this industry, a lot will be slow to understand this new way of thinking, in fact, a lot will dismiss.
I swapped out my Tucker brush for the Constructor brush with Hydroblade. At first, it is difficult to resist doing a final rinse and getting your head around the limited number of agitation passes you need to make. At first, it feels like you are patting your head and rubbing your stomach.
In the end, you will fly through your work. The stock shape with its unique corner jets and corner bristles, the blade bristles, canon diameter and distance apart from each other and positioning have been calibrated to work like a squeegee works. It's amazing stuff, and I am still testing it.
I tested it out on first cleans the other day to great success.