I have both of these cams, ironically. Thinkware in my car and the Viofo A229 (1440p version) in my wife's car.
They're both good but I think the Viofo wins for image quality. However it does have the LCD screen which you may or may not like since it makes it bigger. It's pretty obvious that it's installed and in my vision in her car, whereas my Thinkware is invisible in front of my rear view mirror in my car.
They're both pretty easy to use but you have to have the app and be connected on WiFi with the Thinkware, unless you put the card into a computer and run their settings app there. The Viofo is pretty easy to setup with the LCD screen, which is a much better screen than you get on no name shitty Amazon brands. And reviewing footage without having to connect to Wi-Fi or remove the card is a plus. You can also plug it directly into a computer and the card will show up as a drive.
It's also worth mentioning that the Thinkware uses an analog jack connection for the rear camera and power. Viofo is on the USB standard so presumably you have more options for getting cables later if you need to for power or rear camera hookup.
My vote ultimately goes to Viofo unless you really want the smaller, horizontal profile of the Thinkware camera.
Viofo A229 2-CH is considered the gold standard of features to cost in a dash cam. The downside to the design is because the dash cam has a screen on the body, the whole assembly is enormous, which needs to be installed offset if your car has a honda sense module behind the mirror. I have this on my mom's CRV and it's kinda massive. But I do like how it works out.
Personally, running a Blackvue DR590X-2CH, replacing an older DR590W-2CH that lasted just north of 3 years.
Things I like about the Blackvue:
1. The body is low profile, which hides behind my rearview mirror without bothering me. It's even centered.
2. The app is good, easy to learn and use
3. Recording is reliable with a good quality Endurance spec memory card.
4. There are vendors that sell Blackvue that will go out of their way to help you in a pinch.
5. The components are dead simple if you aren't afraid of soldering.
Things I don't like about the Blackvue:
1. no customer support. They'll even steal your money, which happened to me.
2. Longevity is questionable, as I had to replace my first one within a few years of ownership.
Other notes:
Highly recommend /u/blackboxmycar and their shop https://www.blackboxmycar.com/
ToastierDonut
