I have an HP NC8000, and a NC6000 before that. I have had no problems with either and they perform great. I also support about 250 other various models of HP and Dell laptops and while both are very good it seems we have less problems with the HP's (IMO). I also have a very good friend that recently purchased a Z9000 series and it is superb. Just as good as the Dell XPS for about $900 less.