Weber Filters

I was wondering if any of you have opinions on running filters or screens on Weber IDAs. I know Inglese makes some stuff for Webers, but I have heard they are restrictive. I run a 4 pack of Webers on a GT-350 and wanted your opinion of what you would do for street use on a car that has these and is front engined.

I run K&N air filters on the 48IDA's that are on my Lola. I haven't noticed any lack of performence...