i just lost (dunno where i put it / sumone might stole it) my Philips SHE9500 earphone last few days. need to buy new one...

my budget around RM100-RM150 only... i would like "in-ear" form factor.

want to use with my Nokia 5800 XpressMusic!

ps: actually, is it called earphone/headphone?

IEM is the exact term, but earphone/canalphone/earplug can be used. Headphones = the big cans to smaller KSC75 types, Earbuds = Yuin PK2 type.

Anyhow, considering your budget, here's your choices (in my limited knowledge ah - items marked "From my readings" are based on my research and hearsay only):

1) Soundmagic PL21 (RM80) - From my readings
- Balanced bass / clarity (supposedly)
- Over the ear (OTE) /normal cable down design
- Ok isolation
- Cheap

2) Soundmagic PL30 (RM98) - FMR
- Less bass, more clarity
- Over the ear design (hard to wear normally)
- Less isolation
- Read up reviews on Head-Fi

3) Soundmagic PL11 (RM60) - Tested with 5800
- More bass, less clarity
- OTE/normal design
- Ok isolation (if you can get it, I struggled to get a good fit with the Silicones)
- Cheapest

4) Hippo Boom (RM150) - FMR
- Most bass, lesser clarity (IINM - from my readings)
- OTE/normal design
- Comes with a bundled amp (Fiio E3 - great little thing)
- Good-ok isolation (according to how deep you can stuff em in your ears)
- Had the Bijous a while back, used it with the 5800. They look the same, I wonder if they sound alike...

If willing to spend a bit more and like bassy but still clear sound: Try the Music Valley SP1. They sound great (slightly bass heavy) on the 5800 (to my ears anyway) but are largely overlooked... Of all my previous IEMS (Bijou, Quattro, PL11, SE HPM-70/75), I like the SP1 best...

Everything else just costs more, lol...