Pocket Wizard: TT1/TT5 versus 2 x TT5
The TT5 is currently cheaper here in the UK for what seem like more features
The tt5 can do anything the TT1 can do and more (as far as I know. I have some knowledge of the system, but not fluent). The only advantage I am aware of is the TT1 is smaller, and usually cheaper. The advantage of the the TT5 is common batteries, the same batteries in both remotes and your canon flash(es), and the ability to grab either one to perform either duty. If it were me, I would go TT5.
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