I like GPSTomTom. I had several, and always done their job. Once I bought a Garmin but did not like it and replaced it with a TT. The few tests carried out with Chinese GPS, including the one you show, but under another brand, have been severe failures (hardware and software), almost immediately after the purchase ..
I recently bought a TT rider 450, I am very satisfied, even if he suffered the disease specific to this model (base that no longer works) but it has been changed under warranty, and since, no problem.
So yes, the price is not given, but it is the price of efficiency and tranquility.
I did not wait to buy the new TT550, which does not offer a radical change over mine 450.