For those looking for door speakers for their XV in the US, Best Buy has an excellent deal on Polk DXi-650 6.5" speakers for $39.99 - Polk Audio 612" Coaxial Loudspeakers with PolyMica Cones Pair DXI650 - Best Buy. The regular price on these speakers is $99.99. The DXi series is the big box store version of the popular DB line of Polk speakers. They are highly rated everywhere.
I don't know how long the sales is on for but for 60% off, it's a good price.
Crutchfield sells the DB651 (which is the DB series version) for $99.99 - Polk Audio db651 6-1/2" 2-way car speakers — for 6-1/2" and 6-3/4" openings at Crutchfield.com. Amazon sells them for $55.30 - Amazon.com: Polk Audio DB651 6.5-Inch Coaxial Speakers: Car Electronics.