Ligth Pollution Filters for a 4 inch refractor

I live in a modertaely to highliy light polluted area nad I was considering getting a light pollution filter for my 4 inch refractor.

Does anybody have any suggestions on what filter should I get?

Thanks!

Saul.

Though I've not used mine under a highly light polluted area, I've found the UHC to be best balance in that it worked on many objects and yet with enough brightness coming
through my 4" TV-102 APO. However, the O-III works better
on some objects but gave a dimmer view. I've never tried the LPR (i.e. milder than UHC) filter.

Ron B[ee]