I'm about ready to pull the trigger on one. For years I used gravity to get my wort from one place to another. However, the past 18-24 months or so I've made significant upgrades to my equipment in the form of a Blichman 15 gal kettle, 7 gallon conical fermentor, burner with leg extensions, and a plate chiller.
I don't have the height that I use to have with my new burner so it's a little tricky to use gravity to transfer from my kettle to my fermentor. Right now I'm making it work through sheer brute force but that's getting old. I've thought about getting something like the Blichman Top Tier, however I BIAB so that's really a bit overboard for one brew pot. The leg extensions work wonderfully on the burner and that's really all I need. The cheapest solution is using a pump to transfer my liquids around.
As always YMMV.