Alternative to pET Vectorsystem - (Jan/13/2013 )

Any suggestion about other vectorsystem than pET?

for expression in bacteria? there are plenty:

http://www.sigmaaldrich.com/life-science/molecular-biology/molecular-biology-products.html?TablePage=16719844

http://www.clontech.com/AU/Products/Protein_Expression_and_Purification#

Invitrogen is great, but many of their products are based on pET.

http://www.invitrogen.com/1/3/bacterial-expression-vectors

what is your problem with pET?

There is no big problem with pET. Just in case.