Asus Zenbook X305 should be good enough. Since it is just 13.3" with QHD+ display and weighs only 1.2kg. And you can get it at the price around rm2.4k. Although the M-5Y10 processor is slightly behind the core i5-4200U, it should be good enough for your usage already. SSD sumore. 

Core M only comes in dual core flavors with hyperthreading, with TDP of 4.5 watts. its different than i7 Ulv which is dual core, but 2 threads.. this core M is dual core with 4 threads.

as comparison Here

The three main differentiators between each of the SKUs in the Core M line are the processor base frequency, the processor turbo frequency and the integrated graphics frequency range.

Intel Core M 5Y71 advantages
-Operating frequency of the CPU is higher than the frequency of the 5Y10, as a result this Intel Core M 5Y71 has better performance in most applications.

and M 5Y71 is newer processor too... Q4/2014 while 5y10 is Q3/2014