250F Ignition?

I have read a ton of stuff on the Vortex ignition for the 250F, but has anyone tested or heard any news about the FMF AOF. It is a lot cheaper, but it could be (get what you pay for). I am already sold on the Vortex, but would really like to hear the FMF is just as good. It is worth a shot before I drop $400. :eek: Thanks.

How much is the 2mm overbore kit?

Thanks for the reply. I got a quote of $350 for the Vortex. I think I am going
to go that way as soon as I can. Thanks again:)