IMO, Dell is a bad choice. Go for Toshiba Satellite, it will cost you cheaper and is way better, components and quality wise.
You can get a 2.66G Toshiba laptop for only $1269.00...
Check the specks:
http://www.mpsuperstore.com/Computer...xtagmp&afsrc=1
it will blow Dell by far in quality and options, plus is way cooler as design... I love the semi-transparent keyboard design.
A20 and A25's are both good machines.