I have used SONY Vegas, ADOBE Premier Elements and Pinnacle as form version 8 onwards and found version 15 to be the best of the lot. Admittedly, it does not have as many features as the others but I would think it has enough for the majority of family video makers to produce a presentable video that will become an interesting and almost professional looking video presentation.
One of the problems with all of the programs I have used in the past is program hang up and while this program is no exception, it does not hang up anywhere near frequently as the others did and is relatively stable. At the times it does hang-up, it has self-recovered to the point of the last edit and I managed to continue working with it until completion. Just try and not to enter too many commands while the program is processing the last set of instructions!
Another worthwhile feature I really do like is the program can be worked in a way that those of us who used to work with editing film can understand. Take razor blade, make your splice then cement together and all of this does not involve manoeuvring between menus and, as is the case of Vegas, into yet another program (SONY Architect).
Overall, if you do have a good spec PC, do not wish to be over enthusiastic with optical tricks/gimickery and need a relatively stable program and with not much training in navigation through menu bars, etc, I suggest that, based on my experience hitherto, you should give PINNACLE version 15 a try.
Please note that all of my commnets are given in the relative sense.
Good luck!