I have two criticisms of the III's:
1) if I want to turn on the LCD light (so that I can see the settings when it's dark, like in my studio), I have to press a button, any button. Unfortunately, that means that whatever that buttons does, happens. So, if I want to turn on the LCD light and I press the power button, typical on many devices, it actually also changes the TX/RX etc setting (this caught me by surprise during my first shoot with them, and caused quite a bit of difficulty until I figured out what happened!)
2) If I'm using my 70-200mm lens, and I rotate it on the tripod (using the tripod collar on the lens) to portrait position, the PocketWizards buttons and screen are now facing down. I'm having trouble setting different zones by feel (I had a set of Quantum "FreeXwire" radio triggers that also had zones, but they were set by actual up/down switches, very easy to feel). Also, the screen is now facing down, so I can't glance at the III to see what zones are on or off.
Small niggles, but they are affecting me every day, I do wish they'd kept the screen and buttons facing backwards, instead of sideways (though I understand why they did it that way, it does give a nice, slim, profile).
Oh, and one thing about mixing II's and III's: the zones of the III's only work from channel 17 and above, but the II's only have channels 1-4 (if I remember correctly). If you are going to bring a II into the mix, you won't be able to trigger it if you also want to use zones with your III's. I admit I might be wrong on this, it's worth checking.
Thank you for chiming in, I appreciate your comment.
I seem to agree with you that the four zones will come in handy as I have several strobes I will use depending on the set up. I will just have a spare II when I buy a set of III's. I also found a three pack of III's with the holders for $433 USD which seems like a nice deal (tax included). The base price for one III in most stores is $139 and for one II is still $169, I'm not sure why either but those III's look sexy! LOL Thank you again and I'll post after I buy them and share some images.
I must say I am thankful for the optical slaves as they have been great in helping me learn. However the III's will help me take my shooting further.
Have a wonderful day!
I'll chime in: the III's are superior in every way to the II's (and, just to be sure you know, they are not TTL devices, that seems to have caught many people by surprise). I personally love the 4 zones and the robust construction. I use them both in and out of the studio, to trigger lights and cameras.
And here in the UK, the III's are cheaper than the II's (I have zero idea why!).