[OT] MP3 Bitrate

I was curious what bitrate do you import your CD's into iTunes? I'm currently using 192kbps VBR MP3 encoded by iTunes, and am considering going higher but am not sure if there's any audible difference. I've tried LAME before but like the convenience of iTune's interface, and I believe iTunes 8 has more MP3 encoding options than before. I'm about to encode a bunch of CD's so that's why I'm asking.

Thanks,
Alexander