Thank you all so much for replying to my post. All of you have brought up very important points for the 8000 and for the 4000. You all have brought me to not only know but understand why you choose the way you did.
Also the discussion on Apple Maps has been very interesting, as my only experience with Apple Maps is when I used my friend's phone when it came out, and it was horrible. The last iPhone that I have personally owned was an iPhone 4, and I chose to leave the iPhone community because of the particular and overly restrictive design of the iOS. At that point, I decided to leave the iPhone community to join the Android community. Unfortunately I would need to wait for Android Auto to come to fruition before I am going to be able to use my phone as part of my stereo. Therefore, I will need a head unit with navigation. I appologise that I did not forewarn that I am an Android user, however the discussion in regards to Apple Maps and Apple CarPlay has been very informative and intriguing.
Just to recap (the following information has been compiled with the consideration that the functionality of the 6000/7000/8000 NEX are exactly the same except for screen size and other differences listed):
4000 NEX
Pros:
Most economical
Removable Screen
Apple CarPlay ready
7" non-capacitive screen
Display is not as bright as 8000 NEX
Cons:
No Navigation - designed to be used with Apple CarPlay
5000 NEX
Pros:
Navigation included
Removable hard buttons
Apple CarPlay ready
Cons:
Loss of HDMI connector in the rear
More expensive than 4000 NEX
Less desirable design (subjective)
Hard buttons feel cheap (subjective)
Display is not as bright as 8000 NEX
Neither:
6.1" non-capacitive screen
Utilises MicroSD card
6000 NEX
Pros:
Navigation included
Removable hard buttons
HDMI included (compared to 5000 NEX)
Apple CarPlay ready
Cons:
Less desirable design (subjective)
Hard buttons feel cheap (subjective)
Display is not as bright as 8000 NEX
Neither:
Middle range device for a middle range price (Half way between 4000 NEX and 8000 NEX - CDN prices)
Utilises MicroSD card (up to 32 GB)
7000 NEX
Pros:
7" screen
Navigation included
Motorized screen
Utilises full size SD Card
More desirable design (subjective)
Hard buttons has better tactile feel (subjective)
Apple CarPlay ready
Cons:
Non-capacitive screen (compared to 8000 NEX)
Price is set too high compared to 8000 NEX
No removable components for security
Display is not as bright as 8000 NEX
8000 NEX (Flagship model)
Pros:
7" Capacitive screen (allows for multi-touch for zooming and other functions)
Apple CarPlay Ready
More desirable design (subjective)
Hard buttons has better tactile feel (subjective)
Navigation included
Utilises full size SD card
Brightest screen available in the NEX line-up
Cons:
Most expensive
No removable components for security
Please feel free to correct me if I am incorrect about any of the information posted. If you can, please verify that I am correct in saying that the screens are not removable on the 8000 NEX, and if possible the 7000 NEX as well.
Once again, thank you all so much for your participation in this thread. Your input has been very informative and has provided me with the insight require to make an informed decision.