...Any opinions on what's better then the rest?

TMS, Swaybarbarians, Eibach, H & R, Racing Dynamics...A few I took a look at...

Does the mm in the front and rear make a difference? What is optimum for the least body roll? What type of sway end links can you run on an OEM sway bar? Are OE okay?

Any experiences good/bad with these swaybars?

Thx for anyone that wants to take a shot at this thread...

Anybody?

...Any opinions on what's better then the rest?

Personal preference. You design a suspension around the springs and dampers first. Then you need bars to match and achieve what you want.

Does the mm in the front and rear make a difference?

Sure, bigger bars are stiffer and vice-versa.

What is optimum for the least body roll?

Bigger bars = less roll, but less roll doesn't not always translate into better handling.

What type of sway end links can you run on an OEM sway bar? Are OE okay?

They'll be ok unless you lower/cornerweight your car, at which point you'll want to be able to dial out the preload with adjustable endlinks.