look at Acer Aspire Switch 10 SW5-012 - 10.1" IPS Touch + Z3735 + 2GB + 32GB + 500GB + W8.1 Bing + Office 365 : RM1315
another is Acer Switch 11 SW5-171-337K - 11.6" IPS FHD Touch + i3-4012Y + 4GB + 60GB + W8.1: RM1820 but out of ur budget range.
Acer V3-112P-P0SJS 11.6” - RM1210 also have decent battery life. estimated is 7 hours on heavy usage.
for ur usage for presentation, i think switch 10 much suitable u. not much different in screen display as well as have detachable keyboard.. need type, its lousy to type on screen and a bit slow,then use keyboard. present ur work, detach it..
Low cost and detachable notebook. you can stand around during presentation cz its detachable

The Switch 10 is in the same price category as a Chromebook or mid-range 10-inch Android tablet.
fyi, there is always pros and cons between android and apple. but current apple product is different than steve jobs era

as for android, its have a lots of supported apps but many bloatware as well

sounds like i have something suspicious
u mean Aspire V Nitro VN7-591G-78SG – 15.6 IPS FHD + i7-4720HQ + 8GB + 1TB+8GB + GTX960 2GB + W8.1 : RM3550
better u go for Asus G551JM-DM052H – 15.6” FHD + i7-4710 + 4GB Ram + 1TB + GTX860 2GB + 6 Cell + W8.1 : RM3350
remaining money add the ram, max 16gb... that 4gb ram, u can sell
not much different gtx860 and gtx960..