I am probably going to catch some flak for saying this, but I have two pumps sitting on a shelf and prefer now not to use them. I've tried a number of different ways to brew, I have nice kettles w/valves, quick disconnects, tons of tubing, a CFC etc. etc. but after doing a lot of experimenting I got back to a simple three tier gravity system with minimal tubing and an immersion chiller. Thinking of going to no chill actually. When I had more complex setups it was a pain in the rear end (I did not have a fancy brew rig, just pumps sitting around, which I had to move inside after use). Switching tubing around, trying to prime pumps, and of course the clean up. Half of brewing (unfortunately) is cleaning...think about it.
I wouldn't steer anyone away from pumps, but brewing without pumps is working well for me.