Cortland 444 and the Lazer. Had a very bad experience with Airflow, or whatever its called; the fly actually broke when I was pulling it of the reel. I cut it into one inch long pieces and binned it.
Also have used the Aircel floater, which is good, and the Lee Wolf (if that's how you spell his surname) triangle taper, which certainly chucks a very long line.
Ron, here's a question for you. DT or WF for Spey casting? Presently using DT.