The Whiteline bars are pretty beefy and actually measure 22.5mm in diameter. I've got the front in the firmer hole, the rear in the middle.
Initial impressions- no difference in driving manners around town (including a bunch of uneven construction). Took a short little run and the car is flatter w/ the larger bars- not a lot, but a little.
Have a autox on Monday, I'll put them through their paces then