Haha, I wasn't considering HTG name brand but I guess it is so more than Gotham. I correlate Gotham with Blackstar which instantly made me put it on the same level as HTG. You're right though a lot of Gotham products are third world knock offs.
Name brand, top of the line filters = Phresh, Phat, CAN and for the elitists with extra money to spend, Mountain Air. Get any of these and you won't go wrong.
That's pretty crazy that it was an all in one unit, but as we both know.. grow and learn, there's no other way to do this. No matter what advice is given or received, most people will make a decision and then grow and learn. I hope you didn't take my comment as questioning your advice, I was supporting it - the jist if what I was saying is "you get what you pay for", if you're doing a commercial grade grow then you should invest a commercial priced fan/filter combo.