Laptop experts lai , i need some advice. First time buying laptop.

I budget ~RM2200  for a laptop i5 intel  2nd generation, 4Gb RAM for my son to go study in U. Study Science, not graphic design. He plays Dota game, but not my intention for him to do more heavy gaming.

Found out best price is from Acer Aspire 4750G -2414G50, 500GB HDD, 4GB Ram, NVidia GEforce GT520M, webcam, DVD writer, WIfi, Bluetooth and all. with a lot of freebies now, YES dongle 3.5GB worth RM217, Free Titanium antivirus for 3 persons, free 3 years warranty - RM2149 only.

But i also found out comments about "dont buy Acer" quite alot in the old forumn (2 years ago).,  said Acer parts poor quality, screen can go blank ,keyboard poor quality cant last long,  bottom can get heated and rosak.

Any current users can verify these weakneses of Acer Aspire?Has Acer improved on these in currrent models?

My son said his frens are using Toshiba, HP and Lenovo. Are these 3 brands significantly better built with better parts that can withstand daily usage better than Acer laptops? I see their warranty mostly 1 year only.

Is it worth paying abit more to get Toshiba/HP or Lenovo?

How about Dell? all  these are more expensive than similar spec Acer right?

Thanks for recomendation on which laptop that i should buy.