cindyen, 1st, check which 1 have best coverage for you.
coverage is important! ok?
test all 3 telcos (maxis/digi/celcom) - use your own and borrow your family/friend simcard to test the speed.
2nd, you want to use on pocket pc, is it for data only or including voice plan?
data only = can surf internet and sms only.
data + voice = can make/receive call like normal mobilephone.
price per month for data only:
digi (max 384kbps, usually edge 267kbps) rm66
celcom 3g (max 384kps) rm68
celcom 3.5g (max 3.6mbps) rm98
maxis 3.5g (max 3.6mbps) rm99
* maxis here is maxis postpaid unlimited data plan, not maxis broadband. maxis broadband simcard is locked and can only use on the modem provided from maxis.
if you want + voice plan, pls refer to their website, or in average, the price above need to add the price below per month:
digi rm20 access fee only / rm50 no access fee (all talktime)
celcom rm30 access fee only / rm50 no access fee (all talktime)
maxis rm30 access fee only / rm50 no access fee (all talktime)
good luck