I have been using Jupiter for the past 3 years but recently I have switched to M+ Online by Malacca Securities. Jupiter has been very good for me, but this M+ Online is just greater!
It charge cheaper brokerage rate (0.035% or min  RM6), provide better analytical tools (powerful stocks screener by INSAGE; real time chart with 1 minute interval and advance indicator such as Ichimoku Kinko Hyo), give me higher interest rates (2.3% for amount less than 100K). So what else can I say? But the main reason I switched to M+Online is because I really love the tools provided which is better and run smoother with their system.
Btw, my account is a CDS account and it is a cash account. I think they are still having some other promotion. U all may want to check it out too.