Confused which Module should I get trained in?

Hi,

I am a software engineer, basically into Lotus Notes development.... I have also been a business analyst for couple of projects.

I am of the view that my technology is not going too far.. so plan to take a career change, but i am totally confused as to which module should i get trained in in order to move into SAP.

I counsulted one of the training institutes and they told me that i should go for BI module...

Can some body tell me whcih module should i choose .. so that i get a good job which is stable and high in demand.

Thanks in advance