I'm with you, from what I've researched, larger front is best for track use with coilovers. That said, I'm sure others will dissagree. For my driving, a front sway (bigger) doesn't seem necessary.
Personally, unless your going to be a track rat, a front sway upgrade is not necessary.
It does depend on where you start with a suspension.
I have the 19mm Hotchkiss rear sway, when I put on the TSW Linear Springs for the R56, I had to back the bar to it's soft setting.
Also, depends on wheels and tires used, lighter is better, you guys can do 15s, the R56 struggles to find a 15 and then you would need coilovers to bring the height down.
