Best/most popular prepaid data/mobile service? (Kuala Lumpur)

Hi all,

Before I arrange a long term lease I will temporarily (one month) live in a short term apartment. This of course means that I am in need of some kind of prepaid service for the first couple of weeks as I am a heavy call, sms and data user.

What I am looking for is more or less:

- Unlimited calls and SMS

- Protected content of data

for a one month period of time.

So, "who" do you recon I should choose and more importantly where do I buy this without the risk of getting scamed?

Kent