Tying to decide between the ETS 150/3 or the 150/5 for my boat projects. Primary task is taking down rough fiberglass/fiberglass filler/primer prior to using LPU paints. Secondary task is preparing raw wood for varnish. Previous projects were completed with Porter Cable disk/pad/orbital sanders. Also want to reduce the use of my 3M mask and go with either the CT22 or the CT Midi. Leaning toward the ETS150/5. Which vacuum? Thank you, Larry.