Do any of you IR shooters use the Heliopan IR filters? As you may have seen from another post, I've had significant flare when using the Hoya R72 IR filter. In response to my inquiry, B&H determined that the Heliopan IR filters have a SH-PMC 16 layer coating. Its unclear to me whether this multi coating will be effective in the IR range. Its a $110 filter so before I spend that, do any of you have experience you can report on this filter? Thanks much.