I work since years with magix video maker. Latest version which I bought was 16. They update the prog over the internet regulary. When I cut hd videos, I work with a good laptop (toshiba quosmio) and have nearly no crahes. In fact, I do not remember one and I work very often with mvmaker16.
Magix Crash Prog Nr. 1 is Magix Music Maker. I hate it but need it for quick results.

Great advantages of magix video maker are the many effects on a very high level and of course the cheap price. But If you want to make high end videos for pro, of course then you need maybe better equipment. Btw.. a friend of my works in munich / Pro7 - and he also uses for private the magix products.