I've had the same one as trt for well over a year - it does a good job and has given me no problems.
You might like to know there is an updated version available which is supposed to be a bit better in low light.
Don't bother getting any internal memory - it's just a waste of money; memory cards as recommended by trt are better.
I bought the version with GPS built-in because I like toys - it tracks your progress on Google Earth when you play it back via your computer. I found the free software here better than that supplied by Eprance (it's a Russian site but I had no problems with spam or viruses).
http://www.registratorviewer.com/index_en.html
There is also a good review site (Techmoan) on UTube and also videos showing you how to wire them in invisibly.