mmmmm... that plasma disc is mighty pretty, fits perfectly with the borg mod too.
I hadnt even thought about Maplins thanks for the link, Hadnt considered interference either. I think those strobes are likely candidates. Im hoping that as theyre used in cars, they wont generate too much interference as you wouldnt want them clicking thru your speakers. Good price too. So I might try them with an inline suppressor and maybe some shielding and see how it goes.