or'd condition versus checking against a list

I check my mail for requested email from "commercial catalogs" with 
an or'd condition, like so:

* ^From:.*(l.l.bean|jasc|west marine)

I am now beginning to get quite a long list of requested commercial 
catalogs, and am wondering if it is more efficient to continue to use 
this condition expanded to include all the possibilities (my example 
is shortened for brevity), or to shift to checking an external list, 
similar to checking my whitelist for mail from people I know and 
trust.

My hunch is that the or'd condition is more efficient but I'm not 
sure, thus I ask.

TIA

Doug


_______________________________________________
procmail mailing list
procmail(_at_)lists(_dot_)RWTH-Aachen(_dot_)DE
http://MailMan.RWTH-Aachen.DE/mailman/listinfo/procmail