I thought I had just corrected you, but I'll do it again. The pocketwizard flex system can do everything the MultiMax/Plus II system can as well as TTL. It even uses the same cables to the large part. Cables are cheap and standard. The AC9 and the like allow remote control of power but you can use manual without buying that. So to be clear the TT5/TT1 can control a manual studio flash with the correct cable (the same one as if you were using a Plus II).

It's also worth mentioning that PocketWizard is built into lots of Pro Gear, for example my light meter and studio pack have it built right in. I'm totally wireless, you can't do that with any other system at the moment. While not everyone will use these features I think it goes to show how flexible the system is.

Cheers

Cris