15" normally not light

Reliable - all brands has lemon. You want reliable warranty support

(especially if you actually use it in "office" and could not afford downtime

)
Dell
14"
Inspiron 14-3421, i5-3317U + Nvidia GT625M@RM1799[1.99kg], Win8SL, 4GB, 500GB(5400rpm), 6-cell
Inspiron 14R, i5-3317U + Nvidia GT640M LE@RM2099[1.97kg], 4GB, 750GB(5400rpm), W8SL
Vostro 3460, i5-3210M + Intel HD4000@RM2199[2.23kg], 4GB, 500GB(7200rpm), W7HB; colors: red/silver/bronze (if you prefer matte screen)
15"
Inspiron 15R, i5-3317U + AMD HD7670M@RM1999[2.32kg], 4GB, 500GB(5400rpm), W8SL
Inspiron 15R, i7-3517U + AMD HD8730M + (1920x1980; anti-glare)@RM3199[2.32kg], 8GB, 1TB(5400rpm), W8SL
Vostro 3560, i5-3210M + Intel HD4000@RM2199[2.57kg], 4GB, 500GB(7200rpm), W7HB; colors: red/silver/bronze (if you prefer matte screen)
Upgrade warranty to 3 year on site. Select MS Office when you buy from Dell Online. Within your budget.
Price is RSP, negotiable (if you buy from Dell Online, just online chat).
Thanks, if i choose other brands. Any good choices?