I use Slic3r about 70% of the time but I also use KISSlicer and Skeinforge. Skeinforge is incredibly configurable but hard to get used to. I use it about 10% of the time and am getting better with it.

I get my most perfect prints from KISSlicer. I use it about 20% of the time. It's amazingly clean but it lacks a few settings. For instance, you can't do multiple skirt lines and you can't connect to the printer. So I have to write to media and carry that to my printer to print. Not a biggie but I do like to control the printer from my computer.

I attached a torture print from the i3 using KISSlicer. I've looked at dozens of photos of prints using this torture test and I think this is the cleanest one I've ever seen. The towers are really good, there is no stringing, the arch is nearly perfect and I added a bridge inside the hollow box of my model. That bridge printed very well. It's a little spagetti-like underneath, but it's still a good bridge.

KISSlicer_TowerTorture.jpg