baffled flasks: vital or futile ?

[Eric Campeau]

Hi,

 I am currently starting expression in yeast and the manufacturer (of the expression system) is highly recommending baffled flasks.  
However, we do not have those flasks, only regular Erlenmeyer.  Should I follow blindly the manufacturer's instructions ?  If not, is there 
a  place I could find some good and cheap baffled flasks (from 250 ml to 2000 ml) without spending away for nothing ?

 Eric Campeau
Graduate student
McGill University, Montreal, Canada
e-mail:popa0272 at po-box.mcgill.ca