I have an Acer Aspire (not your model) with 17" screen. Only thing I can say is that is rather heavy if you need to lug it around. However, being elderly, I need the larger screen to see things well.
Wife has a Dell Insperon (bought as reconditioned about 4 years ago). Can't tell it from brand new and came with a 2 year home visit warranty.
The replies about a US PC in the UK with Power, Duty, VAT and warranty are real concerns.
One upside, my Acer PSU is 110 - 240 V 50 / 60Hz.
Allergy Advice: This post may contain traces of Meerkats.