VisceralSound 10+ year member
CarAudio.com Elite
The exhaust is personal preference, I drive with my windows down most times and I can hear my exhaust and it doesn't bother me, just used to it, as said if you we're going for a Sound Quality aspect then it would hinder it a bit and you would need some CCF.
As for what speakers to use specifically once you hit the $200+ mark it becomes personal preference (or any speaker for that matter) read reviews of the speakers if they sound like what you'd like then go for them.
As for headunit, I would run NEW an Excelon headunit or the higher end Pioneer (even though I will most likely never use one) currently I have an Eclipse 5030 and love it. Look for the things you will use so you're not paying for stuff you won't. I look for 1. 3 preouts 2. iPod/USB 3. NOW being able to go active with my sound stage, with the 5030 I got Bluetooth for free really with the price I paid.
As for what speakers to use specifically once you hit the $200+ mark it becomes personal preference (or any speaker for that matter) read reviews of the speakers if they sound like what you'd like then go for them.
As for headunit, I would run NEW an Excelon headunit or the higher end Pioneer (even though I will most likely never use one) currently I have an Eclipse 5030 and love it. Look for the things you will use so you're not paying for stuff you won't. I look for 1. 3 preouts 2. iPod/USB 3. NOW being able to go active with my sound stage, with the 5030 I got Bluetooth for free really with the price I paid.