I booked two business/first standard awards for our trip this summer. SBA-SFO-LIH was saver first (got intl config SFO-LIH, so lie-flats), but coming back was LIH-SFO-EWR-SYR. Coulda done saver economy, but chose standard business instead. LIH-SFO was supposed to be the same lie-flat, but delays switched us to another flight so it was just domestic first. But SFO-EWR was still p.s.

260k UA miles on the trip, totally worth it. (Then we got back home to SBA with TY points flying economy on AA. Blew the whole Prestige bonus as tickets were ~$400 each for the one-way.)

I guess I wouldn't say I do it often, though.