the simple answer is your question is meaningless.
a pc is a tool and a fast video editor won't necessarily make a fast gaming machine.
and laptops are even more likely to be "middle of the road"
for performance in most areas
best advice I could give is buy a couple of computer mags ... see what they say.
visit pc world etc etc and play with a few ...
see how they feel
talk to the staff
(you wouldn't buy a car without a test drive)
look round for a good price .....
the market is so cut throat these days that amongst the mainstream sellers ... there isn't much difference.
(I can't believe I said that!)
once you choose a brand
generally speaking (and this is one hell of a generalisation - but for a laptop)
money = speed
Decide how much you are willing to pay -
(don't fall into the "for a few dollars more" trap)
stick to your budget!
don't consider less that dual core
accept that as you walk out of the shop ... a faster machine just appeared on the market