Ive had two since 2009 . I wanted a reliable ignition with no iffy parts and the "russian roulette" experience you get with the indian parts, as this was for a rally scoot.
The first one was the single phase
On the return journey from IOW i had a terminal big end faliure

after removing the flywheel the coils on the stator looked alot darker an almost burnt colour ? So i took it back and it was exchange, for another, this was the three phase version.
Unfortunately this left me with a little less faith in them, also if it did go on a rally i would have no chance of getting replacement parts, as most people/dealers have the indian type . So i fitted the indian type to my rally scoot and just carried spares.
The Electrex then went in to another scoot and just used locally, so ive only done 1000 ish miles on it since.
I have just fitted it into my rally scoot and im going to give it another go. So this is the three phase version (i dont think they sell the single version anymore ?) i asked the supplier re a wassell conversion, the Stator has two yellow wires and one needs to be earthed, so it is already " DC ready"

and i fitted a single phase wassell as advised. I should say here ,i have no idea what the single/three phase is all about !
So i can give you any more info apart from it a nice quality kit, it starts easily and the light are nice and bright with a std car H4 bulb
So Pros
Light, single piece flywheel
UK made and including Japanese parts
Built in adv/retard, but fixed and only about 5deg
Cons
If it goes tits up not as easy to get parts quickly
Expensive
Indian type
Pros
Cheap
Readily available parts
Cons
Made in india and all the parts are a bit of a lottery
BGM
Pros
Light single piece flywheel
Better quality parts than Indian ?? debatable ?
Cons
Still made in the far east and still a bit of a lottery ?? Debatable ?
Expensive, about the same as electrex
no advance retard as std.
Russ