Hi, I work in my basement shop, appr. 700-800 sf. My Delta 50-760 dc is on wheels and can roll to my machines. I use the 4" provided. I use an overhead jet afs 1000-b for fine dust control, (supposedly). I feel I could do better. Considering a Wynn 35a cartridge, which would set me back 135-200. If I go that route, which of the 3 35a should I get? Would I notice any improvement? How do I clean the cartridge, and how often. Also, would I do just as well getting a new bag for my Delta. Finally, would I do better selling what I have and getting a cyclone? Any input would be appreciated. John