Filing a composite to me just isn't practical. IFR handling here in the Midwest is great and take advantage of it.
I ferried a Piper 6XT from Camarillo to Indiana, and was IFR from Flagstaff to Kansas. I opted to cancel the IFR and stay vfr over some mountains that would've required a nominal climb, and then on the back-side I picked my IFR back up. It was all in ABQ Center's airspace, so it was easy. CAVU day too