Its not only for 2420 its for all vostro lappi u are gonna love them I am using them for 8 th standard now m in 2 year of engg.
And still I found dell vostro as best and beast amongst the race in my home there are more than 5 laptops of dell which doesnt find any issue rather than battery issue its battery get damaged after 3 years so we have to replace it its worth around 1400 original from delhi and in the warranty period dell services are best in any coustomer care means my charger got damaged and they changed it in 12 hrs and my home is 60 km away from delhi also.
Easy to use if you want laptop for any use rather than security go for it if you are curious to security than u must take mac book of apple only if your work is so confidential.