Lots of advises here. More than a multi quote could handle
My 2 cents:
- There are good quality LED backlighted laptops out there these days. But make sure that the colour and contrast of the display is good enough for you.
- Go have a look at the display of your laptop of choice before buying! Compare models side by side. For photo purposes many laptops fail to give enough black contrast, independent of the type of back light.
- Display quality of Apple is always good, if you'd consider moving away from Windows.
Buy enough RAM and disk space. On my ultra light Sony with a slow U1200 processor and 2 Gb RAM I run Lightroom 2.6 successfully. Connected to an external USB harddrive for extra storage. Just make sure to resume windows instead of restarting it every time. A fast processor is nice, but always impacts battery performance.
We have a large number of laptop, consumer and professional ones:
To be short on the brands:
- Acer: lots of good specs, also lots of quality problems. Batteries are aging too fast, losing capacity over a short period of time. Faulty motherboards etc. Personally I will not buy any Acer laptops any more.
- HP: nice products, consumer and professional, however we had several quality issues with the build of the consumer laptops: connection of displays with main case, loose keys, etc. Also I think the colour & contrast of the displays of our HP's not the best for photo apps. Batteries are good, price is ok.
- Sony: very expensive but very well build, the high contrast displays are comparable to the Apple displays, good for photo apps. Sony's power management software (settings to 80% max) keeps batteries healthier than the other brands, comes with a lot of crap s/w newly installed. You'll have to remove because all that stuff is slowing the machine down.
- Toshiba: best build quality. Lasts for ever. Medium priced. Depending upon the model, not the best display's for photo apps. Have a look before you buy.
- Asus: no experience.
I'd buy Sony or Toshiba, HP if the price is real low.
For virus protection, remove whatever comes with the laptop and use Microsofts security essentials as was suggested before.