1.Compaq presario CQ41 (or61) Pentium D, 3 GB RAM, 320GB HDD (40k)(2008-2010)
Horribly slow even for its time but trouble free other wise. Liked the keyboard. Battery life was around 2 hrs max(okayish). Not to mention vista really killed that PC, when ran on linux it felt a lot better 5/10
2. HP Pavilion G6-2005AX A8-4500M, 4GB RAM, 500GB HDD, AMD HD7640G+HD7670M(32k) (2012-)
Has been to service center once ( always extend warranty). Quite good gaming package for the budget. Solid build (survived 2-3ft falls like 7-8 times). Big PITA when comes to finding perfect way to run a game without proper CFX support. Also installing graphic drivers in Linux were really annoying. Not to mention that it gobbles battery like a refugee(2.5 hrs on max stretch). 7/10
3. Lenovo Z510 Ci5-4200M, 6GB RAM, GT740M, 1TB HDD (51k) (02/2014 - 08/2014 (then gave to sister))
Matte screen was really welcome, although I felt brightness is tad lower than HP machine. Since it runs on windows 8.1 by default the experience is quite fluid & fast. Performance is great fit regular tasks. Didn't game much though so can't say about gfx perf. Battery lasts about 4hrs. Extra RAM comes in handy in certain tasks like compressing in 7zip.. 8/10