I've had no sluggishness yet working on a doc. I'm using comps exactly like sequences so when we change a cut I dupe the comp and keep cutting. It's easy to then delete the old cuts if we know we're not going back. I rarely used nested sequences in FCP 7 or other NLE's and I'm not using comps in other comps in FCPX. I still like to copy/paste my edits into master comp cuts so I always see all my clips. Guess that comes from over a decade of being spoiled with Sony Vegas and never getting bogged down with massive 90 min 60+ track projects. Even when Vegas added nesting I still never used it - just me I guess, my brain needs to see every bit of picture and sound.
I still say the John Davidson method is the best, this could change as FCPX evolves...
Lance Bachelder
Writer, Editor, Director
Downtown Long Beach, California
http://www.imdb.com/name/nm1680680/?ref_=fn_al_nm_1
