M4 Exhaust Options

[singh21]

I know a few of you have installed new exhausts already...

but what plans does anyone have for their M4's?

I am trying to decide on what I want to get exhaust wise but think I will be waiting until a few more options are available...

Few questions -

Anyone going/gone catless or catback?

Which exhaust are you going/have gone with?

Will a full exhaust replacement have warranty issues (obviously they wont touch the exhaust but what about engine problems?)