Difference b/w Dyn page& Abstract portal component page&Jsp Dyn page

hi all...

i know some difference b/w those...All know we can develope a portal application using Portal components such as

Dyn page

Abstract portal page

Jsp Dyn page...

but if we get a project from the client side,

In which portal component type may we work?

how can we decide which component type is better to work?

for example if we choose Dyn page component...den what is the difference b/w Dyn page&Abstract page&Jsp page?

regards,

ramn.