Thanos
Give MgT a chance. Look it over for yourself. I myself own all but Azinti High Lightning for the CT run, most of the MT run, a solid chunk of both TNE and T20, lots from T4 and the T5 disc. I even own the GURPS Traveller books.
Me, I happen to like MgT, and would say that like a lot of the other runs, each book is its own mixed bag of good and bad. In the MgT books however, each one gives non 3I stuff that you can choose, or choose not to add to your games. Unlike any edition other than CT77(my copys), MgT is the only run tof Traveller hat gives you OPTIONS for building your own setting, as well as running "Cannon" games. And as for a lot of the complaints, Mongoose is re-writing the books that almost everyone had complaints about, and they have to run em by Mark Miller himself now as well. So their quality is improving by leaps and bounds.
MgT also lets you play things like Judge Dredd, Strontium Dogs, Hammers Slammers, Cthothnian Stars, Babalon 5, and Reign of Discordia, all without having to buy anything other than the core rules and a setting book. Heck, you could even mix em all up if you wanted to.
Look the books over, and make up your own mind. Dont let others opinions influence you. You might find that MgT is worth having.
~Rich