When you say presentation, do you need to connect laptop to external projector? If yes, most of the 11" and 13" has limited type of ports (may not have VGA, maybe only mHDMI, ... ), so you need to make sure you have the necessary adapter.
For speedy / responsiveness, you need model with full SSD. Those mSATA SSD + SATA HDD model will disappoint you.
Your budget is a bit low for ultrabook with full SSD.
HP
Pavilion dm3-1001TU (Folio 13), i5-2467M + Intel HD3000 + 128GB SSD@RM2999[1.49kg], W7HP
Envy SpectreXT 13-2215TU, i5-3317U + Intel HD4000 + 128GB SSD@RM2899[1.39kg], 4GB, W8,backlit keyboard
Sony
Vaio SVT13126CV, i5-3317U + Intel HD4000 + 128GB SSD@RM3099[1.66kg], 4GB, W8; color: silver; Vaio carrying case
Prices are RSP, negotiable.
Btw, if you only use it to present presentation, don't need to use it to prepare presentation, you may consider those laptop / tablet that come with Intel Atom CPU, small capacity SSD (64G).
Anyone know where good place to buy laptops in klang valley? particularly shop with honest seller and good price