Up to you, IPTA is harder to get into, IPTS is easier... wanna talk about job opportunity, proper english is a must, whether it is a local company or an international company, why? cause huge companies nowadays are becoming more globalized...we deal with foreigners...

Whatever people say, good english cant be attained by picking either one, good english can only be attained when U URSELF WANT TO LEARN...
im studying in INTI, honestly, most of the students here cant even pronounce correctly, let alone communicating in english...

as for the course conducted, IPTA programmes have higher credibility, and IPTA lectures are mostly PHD and masters holders....IPTS? some of the lecturers dont even have a master qualification, then how to teach??

but when getting into IPTS, you can approach your lectures easier, since IPTS colleges have lesser students, so each student have their fair share of the lecture's time, so use it....

in the end it all depends on the type of course you want to take, if you want the business side, take the IPTS
(down to earth no frills teaching, u dont even need a text book) they will focus more into practical topics, rather than add on subjects that are not related...

but if you want more specialized course like Engineering, Medic,Architectural,Science and technology, take the IPTA, as they have more capable experts and facilities...IPTA are known to teach outdated subjects,or including add on subjects that are not even related to your course, but they have long history of providing strong tertiary educations, so some of these subjects might come in handy.. 
i agree on your certain points BUT:

you have to understand, people do not employ because of their race origin, BIG COMPANIES wont waste their time to employ certain candidates just because of their race or anything like that, so please dont simply blame on lame stuff like "its their geng.." whatever....its a lame excuse...

Im a malay, my father are those people who interview people, he work in LOCAL company OWNED by BUMIS, but still he complained or refuse to take people who dont have the capability to speak properly in english, and dont get me wrong either, HE DONT CARE WHETHER THEY COME FROM IPTS OR IPTA, in the end all that matters is first impression and the candidate's result...

whatever people say, in reality, ENGLISH IS A MUST, if you want my opinion no offense intended here, based on my experience malays have the capability to speak well in english, but they are too afraid or ashamed to speak english with their friends.

Trust me, IPTA students have good grammar and vocab, on the paper they write really well, but unfortunately their lack experience on speaking made them look dumb..so whatever people say, IPTA students are good in english but they just need to speak more...

as for others, their english grammar and vocab sux to the max, but they tend to speak english between themselves frequently, and this is how IPTS students attain their speaking skills

It is time for us to look at the bigger picture here, i know most of us(malays) want to preserve our language, or whatever because of our long history but take a step back and properly analyze the situation. Face the fact, even in the local company, WE ARE GOING TO DEAL WITH FOREIGNERS, even in the big company WE ARE GOING TO DEAL WITH FOREIGNERS, even in the government sector, WE ARE GOING TO DEAL WITH FOREIGNERS. So please, preserve our language as you want but keep it to yourself, in reality more company are becoming GLOBALIZED, and at the same time the more demands are required for people who can converse in english...

regardless on how you view the local education system, education ministry are focusing its people to becoming more versatile,thats why the ministry are focusing on using english on certain subjects. We learn english because we need to deal with foreigners(arabs, europeans, japs,) and not only with white people, we learn english not because we want to worship the language, no, far from that..

THE ONLY REASON IS THAT ENGLISH IS THE ONLY GLOBAL LANGUAGE (or:lingua franca) used by people around the world...thats why we need it..so assuming that learning english will cause the downfall of the local language is utter nonsense and paranoia, because in the end we only use it to deal with foreign people, and not to converse with people on daily bases..

Take note: this will give you the COMPETITIVE ADVANTAGE in the fresh grad groups....

Finally, back to the topic, the factor for choosing IPTA or IPTS cannot be decided just because people say IPTS is better on english or IPTA is better on facilities and what not,

its far from that..all you need to do is identify which educational areas you are interested, and decide which universities gives a better advantage according to your preferred courses...

Don't be fooled by advertisements, and do your own research about certain colleges and universities before deciding...do this and you will never regret your decision. good luck...