Need a recommendation, buying a phone for my mum

1. Probably Nokia, Sony Ericsson
2. <RM400
3. Phone that's easy/good for texting, calls are clear, battery lasts long, has colour(not the shitty kind), camera doesn't matter as long as it's within budget, can use mp3/sound clips as ringtone instead of polyphonic, preferably with an SD card slot. Not sure if it's possible to get all that with my budget lol.
4. Doesn't matter

I did check out the w200 because you recommended it to someone a few pages back, but...what's the difference between w200 and w200i?

Not sure if this is the right place to ask, but are there any good/reputable shops out there for ori sets? Was considering buying my phone from sg wang but kinda scared after reading all the posts about salesmen swapping ap/ori sets/changing parts/recon set etc >_>

Thanks.
Mostly Nokia though

Looking for a phone that's used more for business/office calls, meaning it must have good battery life and calls must be clear. Maybe with a good music player if it's within budget. Budget = RM400-800. Most SE phones suit the criteria though,right?

On a side note, what's the difference between a walkman phone and non-walkman phone for SE? Is there a huge difference for music when comparing the W series and K series?