We have been living at the Centris for two years now. On the whole it is a very nice place and especially convenient with the shopping centre, MRT and buses.
Sadly this place is being very badly let down by lack of maintenance of the facilities. For example the hot tubs have been out of order for 18 months, the sandpits removed, the playground has missing, seized and broken parts and one of the floodlights on the tennis court has been out for more than 9 months. Management always say it is too expensive to do repairs. I think too many owners still have the HDB mindset.
It is true the apartments are quite small, but that is the trend in Singapore, if you want a big apartment you have to buy an old one, the newer apartments are even smaller! There are some problems with the build quality at Centris not being so good. The sliding doors leak a lot of noise and hot air, some internal doors don't close properly and the shower in the en suite bathrooms with bath tubs is unusable, the water drains onto the floor and makes a big mess.
What people have said about the fighter jets is completely true. They are very noisy and they fly most weekdays. Sometimes as late as 11pm and occasionally on the weekends. If you are someone who likes to keep the doors and windows open it is probably unbearable, but we keep them closed and use AC, so we can live with it.
It is also true about the dust. Do not take a patio unit on the library side, the diesel dust from the buses will make your feet black unless you mop every day. In fact, don't take any library or MRT side unit due to the constant noise.
Having said all of that, we do really enjoy the convenience. You can just walk down to the shops any time for food or shopping, no need to find or pay for parking and no need to carry heavy groceries as you can take the trolley all the way back to your front door.