fro a reliability / repairability point of view DON'T buy anything from
Acer
Packard Bell
Gateway
E-machines
Ei-Systems
Advent
MSI
ECS/Elite
Asus
the first five are all part of the Acer empire and have reliability issues
All suffer from poor availability of spare motherboards if a replacement is required
From both issue,, Dell,. HP/Compaq / Lenovo are far ahead