Food for thought...
If Vexilar were to come out with something new, you can bet your last dollar that it will be a good product, and has been tested thoroughly.. Before last winter, the LX-7 never even saw ice. They didn't even have a working model at I-cast last July.
I haven't used an LX-7 so I can't comment on its function, but there sure were alot of comments when they first came out about it having problems. The one good thing is that they were able to upgrade and fix these issues I think. (Pain in the ace though)
How heavy is the LX-7 compared to other flashers? Looks like it should weigh a ton.