What's your intended use for the laptop? Internet? Games? Word? Photoshop?

Anyway, in general, if you want to game but have no money for a dedicated GPU in your laptop (these cost ~35k), get an AMD platform laptop because the IGP of the AMDs are better than the IGP of the Intel platforms (even the i3). These AMD Athlon II processors are good all-rounders as well. They are about as fast as Pentium Dual-Core processors of the same speed.

There are, however, two main kinds of Pentium Dual-Core processors in the market. There are the P-series (i.e. P6100) which are based off the Arrandale platform and is the newest line. And then there's the T-series (i.e. T4200) which is based of the Merom/Penryn architecture. Though the Arrandale has lower clock speeds, a 2.0 GHz Arrandale would perform similarly to a 2.2 GHz Penryn PDC. Keep in mind that the IGP that comes with the older processors is the GMA 4500 MHD, and while it is significantly better than the X3100 it replaced, it is nowhere near the IGP of the Arrandale models and especially the HD 4200/4250 of the AMD models.

Now onto the i3. This is Intel's current mainstream offering, based on the Arrandale architecture. It is essentially a faster clocked version of the Pentium Dual-Core with more cache. It's IGP is also faster clocked than the PDC. They also tend to be a thousand or two more expensive.

As for your suggestions, try checking out asianic.com.ph first. They offer generally cheaper laptops. You don't have to be brand conscious (except avoid local brands like Neo) so what matters the most is the specs.
Generally, at 30k, you should be looking for:

Either a Core i3 or a high-clocked AMD Athlon II processor
at least 2 GB RAM
at least a 250 GB Hard Drive
a LED-backlit LCD