Mr. T. Im probably missing something here but perhaps you LIKE the sound of colouration coming from cabs? Its not abnormal in the slightest. Loads of people love it, having a clean signal outside of the studio is over-rated imho. You like your HIFI system? Guess what it has colouration. A lot of these new fangled lightweight cabs are designed to be extremely accurate. Which is all well and good if thats what you want. I believe this Alex's route and from what people are saying im sure he does it well.
However on the other end of the spectrum we have the instant classics. Ampeg/Trace etc. These cabs by definition are knowhere near accurate but they sound good to some people, actually quite alot. Could be alex's cabs arent for you. Just a different view on the same situation I guess.
On a side-note. Alex without being rude you sound far too defensive of your product, from what I gather you have a right to be VERY proud of your product and for that well done however I doubt its a one stop solution for everyone. As I say well done and Im in no way slating your product