Precision - Very powerful desktop replacements - great warranty, ridiculously expensive - Usually overpriced or overkill
Latitude - Good Laptops - Great warranty! Highly recommended for any Business environment - Sometimes expensive.
Vostro - Lower end Business Machines - Better Priced - still durable - Usually 1 Year warranty.
XPS - The nicer looking dell machines, Some are better than others...
Inspiron - YMMV Every model is different
(Plain) Insprion Series - Dells lowest end laptop
(R) Insprion Series - Perfect Home use, dependable, decent build quality, recommended
(Z) Insprion Series - A little slimmer than the R series, Some are Ultrabooks (Very often don't include Optical Drives) HP
Pavilion - YMMV (Some better than others)
Probook - Stable durable business systems - Usually a little on the heavy side.
Elitebook - Business Higher end systems, usually pretty expensive
ENVY - Used to be the HP sleek and nicer systems, they pretty much replaced most of the standard pavilions now and call them either ENVY or sleekbooks
Sleekbook - like it sounds slimmer line of laptopsLenovo
Thinkpad Series - Very Dependable Business Machine, Expensive (Not Pretty but Durable)
IdeaPad Series -
U Series - Usually the slimmer line Ultrabooks, Doesn't always include DVD Drive
Y Series - Nice machines with good specs and features (Cool Backlit Keyboards)
Z Series - Step up from the G Series, all around decent build, priced nicely, great home use laptop
G Series - Lower endSamsung:
Series 9 - The nicest, sleekest looking laptops I've seen in a long time - Can pass for a Macbook!!
HT: Dh Data Recovery
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