My second (and current) wheel is a Ninebot One E+ that I bought in 2016 (my first wheel was an Airwheel X3 that I bought in 2014). I host riding events in my city (Washington DC), and have test ridden all sorts of other wheels from other group riders (Kingsong, Inmotion, etc.).
Cons of Ninebot:
Shorter range than newer wheels
Ride and handling are not as smooth as newer wheels
Doesn't have headlight, rearlight, trolley handle built in
Top speed is lower than newer wheels
Pros of Ninebot:
I agree, I still love the white sleek looks of the wheel (both in person and in pictures), and I think it looks just as good, if not better, than the newer models
No other wheel has a parking stand that you can add on as a standard accessory. There are so many times I park my wheel on it's stand (on the subway, waiting for an elevator indoors, on the bus, etc.), I can't imagine not having one.
The 16" wheel is ideal for your size and is more nimble. I weigh 140lbs and I find it perfect. I actually don't wish to upgrade to an 18" wheel, it feels too big when I've test ridden them. My wife, who is much smaller than me, actually prefers the nimbleness of the 14" Airwheel (but she also has a Ninebot One E+)
You can buy a second battery as a backup and easily swap it out by making a couple of easy modifications (which I've done), which effectively doubles the wheel's range. See YouTube video here... https://youtu.be/5wQ1dD-a4es . The wheel's range is rated at 20 miles, but for my weight, it starts slowing me down at around 15 miles, so double that with the battery swap ability to 30 miles. It should last longer for you if you weigh less than me. Very rarely have I ever needed to swap out to the second battery.
At this point, the wheel is solid and proven in both construction and firmware. I've seriously never had any problems with it.
I still love my wheel. I keep looking at the newer models, hoping to find one that I could replace the Ninebot with, but no other wheel has everything my Ninebot has. The biggest sticking point is the lack of a standard parking stand accessory you can easily add on (as silly as it sounds, but after having one, I can't go without it!)
There are so many standard accessories you can add on as your budget allows (colored shells, skins, headlight, rearlight, trolley handle, parking stand etc.)
It's easy to learn. For example, I found the pedals on Inmotion V10 high. I think it would make it harder to learn.
I actually find the speed limiter @ 15 mph a positive. I start feeling uncomfortable once I hit 12 mph and over. So I'm glad it caps me off. Falling at 15 mph is no fun (yes, it's happened to me), even with my pads and wrist guards in place. I can't imagine the pain if I were to go 25 mph that some of the new wheels can do.
It's lighter than most newer wheels. Seriously, the few times you do need to pick it up (e.g. stairs), you'll notice the weight difference.
See photo below for picture of my wheel with pretty much every accessory (I'm the one in the yellow shirt). I hope that helps. Let me know if you have any questions, I'm happy to help!