Honestly, Mac is really good. However, at here, it become very inconvenience. This is because most computer here cannot support the files of Mac exclude mp3 and other media files. Like word files, you can't view in mac.
Actually, you buy computer by looking at your requirement. If you just want to use your pc to blogging, surf net, msn, sometime watch movie, I would recommended this:
Intel Core2Duo processor, 2G DDR2 RAM, graphic card is optional. That's only around RM1500. For me, I will not recommended graphic card if you just use for the activities above.
If you want a gaming pc, you may buy:
Intel Core2Quad processor, 4G RAM, Nvidia 8600GS graphic card, or you want 9600, 9800 also ok, just due to your requirement. That's only around RM2600~RM2800.
Have a nice day =)