Ok, any of you who work on large projects know that revit can get very slow and start to regen, etc. And you spend a lot of time waiting. So here is my solution to almost double my productivity. It will cost you approx. $1200-$1400 more or less depending on what you want. You will need a 2nd computer(I suggest a good laptop) and a NETGEAR hub. Yes I'm talking about working on 2 computers at the same time. I just got way too tired of waiting for STC and regens with groups, so what I do now is I hook my laptop up right next to my desktop, make 2 local files one sdbrown and one sdbrownprint(or whatever). Now whenever revit bogs down on a save to central or other command, I just switch over and work on the other machine until it boggs down, then stc and switch back to the other machine. Basically it allows you to work full time instead of waiting for stc's and regens.