Well, after some research I decided to post back here just in case it is helpful for others in the future. The top two sound systems out there tend to be the iComm and the rom/fx.
The iComm has a great static click and the plug and play is very attractive - options you can choose include point to talk or voice activated. It however doesn't alter your voice, though with the Aker system in place it can amplify it.
The rom/fx has options to distort the voice a little and it can lower the pitch a bit, but in the end even with those alterations you will have to change your voice yourself in order to not sound female.
Currently I'm not seeing much out there that is in a reasonable price range or that doesn't include wiring and circuitry skills that are beyond my ability. So that means that the whole voice issue comes down to my own ability to sound masculine. While it would've been a nice option, I can also understand why it isn't readily available. Stormtroopers are a niche market. Add to that the percentage of female troopers, and trim that down to those of us who really want anonymity. . . . hehe yup. I may end up sounding like myself simply because while I'd be willing to pay out an extra couple hundred dollars for a system that does what I want, I'm not sure that I'm willing to shout myself hoarse or continually attempt to mask my own voice by dropping it down. For me that's probably going to sound weird no matter what. Some folks have varying abilities to do vocals. My ability is on one side of that bell curve opposite of Robin Williams on the other.
I do like the option of being able to plug an ipod into the system to play sound effects (and the Imperial March) so I will probably end up with the iComm, since none of the options have actual voice masking, other items on the checklist start coming into play and for the price point I figure the iComm is where I'll head.