Two that I can see:
1) You've got some redundancy having all the same devices, and
2) apparently the broadcast range or coverage or something is better than the mini.
Having said that, I'll probably get a mini when I get the ZoneController.
Right, so there's certainly no 'harm' in getting a TT5 for the camera. Having been observing the product pics, the TT5 seems to be considerably larger than the TT1. So I thought perhaps the TT1 would be more desirable due to its smaller size alone. I should be able to get some of these as soon as I sell off some other gear. Looking forward to the so-called "PW reliability"! 



They're CR2 3V's, I just looked on the Dick Smith website and Duracell ones are $10 each there. Anyone know where to source a Duracell/Energizer cheaper than that?



