I'm unsure of which model of PW's I should buy. The two to be considered are the FlexTT5 and the MultiMax. The price difference is obvious. I'm not looking for someone to tell me which PW is best for me. I'm looking for someone to explain the differences between the two, so I can consider my options, and then make an informed decision. I'm trying to get my head around the differences between these triggers. Since I'm having trouble finding a comparison between the 2, I've instead tried to take what I have found, and made some preliminary theory's. I see 100's of websites, blogs, & discussion boards discussing PocketWizards, it's an endless wealth of information. But I have found very little of them both being discussed together in a format to enumerate their similarities and differences, the pros and cons of each. I'm sure they are out there, elusive as they may be. I use Canon, and would be using these triggers for various lighting setups. I use White Lightening, Canon Flashes, and various manual flashes. I occasionally use Eilenchrome and others, but infrequently. The White Lightening (Alien Bees/Buff) are a constant. I will approach it a little different here, for the benefit of us all. From what I understand so far, Both are Transcievers Multimax has Zones, and more channels The AC3 module added to the FlexTT5 (on camera) gives it 3 zones The AC9 module added to the FlexTT5 (ON STROBE) gives Alien Bees & WL compatibility. So, why isn't the MultiMax not mentioned on the PW AC9 page? Is it because it is already equipped internally with this capability? On the PW site, it says that the MultiMax is compatible to virtually all current flash makes and models...I've assumed that meant White Lightening as well- please correct me if I misunderstood that. So, does that mean: MultiMax = FlexTT5 + AC3 + AC9? I know this formula isn't EXACTLY true, but is it similar? For example, the MultiMax has 4 zones, and the AC3 has 3. But it seems that the AC3 & the AC9 give the FlexTT5 a similar functionality to the MultiMax. Does the MultiMax have the ability to trigger the White Lightnings, meaning, does it already contain the function given by the AC9? The reason I'm confused about that question is that, on the PW site, it states that you can add the AC9 to the FlexTT5, it never mentions the MultiMax on the AC9 pages, that I can see. I assume this either means that The Multimax already has this capability, or that it doesn't and PW didn't intend for the MultiMax to be compatible with White Lightning. I realize I've asked several questions here, I'd humbly appreciate even an answer to any one of these. Furthermore, if the is a link you could share that would also help, I would be grateful...I'm at loss in the search. I've been to the PW Site and forum, Buff site and forum, and as many forums as Google will list. Failing to find this info, I now come to you. I've not mentioned my setup because it is always changing, and as I mentioned before, I'm interested in understanding the differences between the 2 triggers, regardless of setup. To sum up most of what I've tried to convey here, in the form of questions: 1. What's the difference between the FlexTT5 & MultiMax? how are they similar/different the pros/cons of each 2. Why would you choose one over the other, in other words, what are the strengths and weaknesses of each? 3. Since the FlexTT5 is NOT compatible with Alien Bees & WL without the AC9, can The MultiMax communicate (is it compatible?) with Alien Bees & White Lightning right out of the box? 4. Considering the very slight price difference between the MiniTT1 & the FlexTT5, is there a reason the the MiniTT1 might be chosen over the FlexTT5? 5. Are there advantages of buying a combination of MultiMax & FlexTT5? I have several Strobes and several Flashguns. I'm sure I've misunderstood much concerning these triggers, and corrections will be appreciated as well.