Frugal Horn 3 driver replacement.

I have a set of Alpair 7s in my Frugal Horns that came in a flat pack from planet_10 hifi: FH3. I have been using them for about 11 years or so and really quite like the speaker. One of the drivers is experiencing some rubbing on the voice coil and am looking for a replacement. From my limited research, some folks are suggesting the Markaudio Pluvia Seven HD 4 inch which seems in my budget range.

I do live in Canada which can limit some options. What does the knowledge base recommend these days?

Thanks.
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