Many years ago I took a look at some cold cathodes from Lamptron and this week they've informed me about the launch of their FC-2 fan controller. The control panel of this rheobus is CNC milled from 3/4" solid aluminum blocks, it has six fan channels and the special thing is that this fan controller can handle up to 45 Watts per channel!
And if 45W per channel is still not enough, Lamptron will soon also release a fanbus that handles up to 60W per channel.