This is a great thread, especially for those just starting out and considering what they might want to do.
My would do again mods are:
Exterior Addons:
OEM Aero kit front and rear- visually a great addition
LED Projector fog lights with built in DRL- also worthwhile
LED switch back lights in turn signals.
Upgraded HID bulbs to Philips white vision gen 2 5000k- much improved night/rain driving.
1200 Lumen revers led lights- much improved lighting for the camera in reverse.
Infiniti Valve stem caps- a little overpriced, its a nice touch but only if you get really bored and are itching for a mod.
The tow hitch I installed for a bike transport, not the most appealing addition, but it does the job!
Interior Addons:
All weather floor mats- not the best feel, but easy to clean.
Aluminum Radio Buttons- would do again.
20% tint on sides- Gotta have in the south
70% tint on front- would probably not do this one again, I got ceramic tint and it scratches easily, have to be extra careful while cleaning and all dirt on the windshield is much more noticeable.
Changed cracked center console vinyl to leather- was definetely worth it!
Qx70s Paddle shifters- would do again!
Infiniti logo puddle lights- Awesome cheap mod
Escort 9500ix Radar
Amacam AM88 GPS Dashcam
Fortin Evo Nist1 Remote Starter Using Factory Keyfob
K&N Drop in Filters - its the perception of power ha, not really worth it.
Infiniti Logo inner door handle bowls- not really noticeable, but a nice touch.
All LED interior bulbs-def worth it!
Infiniti headrest pillows- our headrests down really lean forward like some of the newer cars, this makes it more comfortable to rest your head on.
Xjui Steering wheel leather wrap- adds a nicer thicker feel to the steering wheel!