Medium Firm Vs. Big Firm

Hi

I am doing articleship and want to change my firm.

There's A big Question bothering should I join medium size firm or Big one?

I have heard that in medium sized you get all types of work like audit,accounting,tax etc but in big firms you dont get All types but only one type like only tax or audit.

In Big firm one gets exposure but in big one gets struck in one department.

but if one does articleship from big firm theres smooth sailing for them for finding desired job.

Name of firm matters or experince?? plz tell me firm where i will find both.

i am planning for Job after completing my C.A so what should i do?

Plz Give your valued suggetions is Medium firm better or Big Firm.

waiting for reply.