I have the 400R bar and once it is sprayed will be ready to go on, have the top secret front bar and ripped it off at a drift day, it is now zip tied together lol Have a vielside rear bar and hate it, i hate vielside. Will change that shortly.
As with ride height, optimal turn in and performance is as close to stock height as you can get (even with a new suspension setup) - Was told this by one of the best suspension guys I know of and the car handles amazingly well.