Imported set basically is China set and it comes with China rom. There's a lot of useless apps and some of them could drain your battery and slow down the performance. You need to flash to another better rom before you can use. It can be troublesome for people who don't know how to flash.

MY original set comes with Global rom. You can use the phone right out of the box. No rubbish apps. No nonsense. Hassle free. Price is of course slightly more expensive than AP set, but it gives you peace of mind. For me who is lazy to flash, it's worthy.

If you have doubts, you can go to their service centre at Plaza Lowyat. There's a display model for you to play with.

And yes. I used to be a Xiaomi phone user  (Mi3, Mi4i & RN2).

my RN3 is working completely fine. It's LTE compatible on Maxis line, fingerprint is fast, battery life is superb, helio x10 is fast enough for moderate usage, camera is better and focuses faster than RN2. One thing about buying AP (imported) sets, you have to be extremely careful while using it cuz once its damaged, you're going to have tough time claiming the warranty

Buy RN2 if you're worried. Malaysian set

If you opt for RN3, I suggest you to wait for local set. According to latest news, Xiaomi is going to release RN3 in Malaysia soon.

Here you go bro. 

http://www.soyacincau.com/2016/02/01/redmi...-certification/

http://www.lowyat.net/2016/94310/xiaomi-re...-malaysia-soon/