I am about to purchase a new laptop workstation and I am considering 3 options :

1.Dell Precision M4500 (new release)

2.HP 8540w

3.Lenovo W510

I am running SW 2010 ,with a lot of renderings ,and use to work with many applications simultaneously.

My most interest is for a bug free machine as possible .

Another question I have is , should I prefer stronger processor (i7-820 quad core over i7-620 dual core) instead of stronger graphic card (Quadro  FX1800 over Quadro FX 880) as price become an issue when you want the best of every thing.