Only had my xterra a month,came stock with a 10.5 Mf. Got my 15 mf. Today and air test the same as my Dd. Exacly.so coverage is what I got.that's ok tho,I wanted that.pinpointing is ok,I've been off an inch or 2 but I'm not us to the xterra yet.overall,if you want more coverage go for it,depth just buy a 10.5 dd.