I can still hear the advice from one of the teachers at Siebel about packaging equipment. He said "Spend all your money on packaging equipment and brew your beer in a bathtub." To me, your keg washer is one of the critical control points of the brewery. No matter how wonderful you beer is, if you put it in a dirty keg then you've wasted all your time and effort. The biggest problem is that you are taking a leap of faith that after you are done cleaning the keg that it is actually clean. You can pull a spear to check every once in a while but this tough to do on a regular basis.
Most of our equipment was bought used, but we spent the money on a New 3 station, 3 tank (caustic, acid and water) semi automated washer from Premier Stainless. Couldn't be happier with the decision. We use a simple 3 head manifold for filling. Two things that I love. You can't take shortcuts and you aren't tied to the machine. I can load 3 kegs and come back 8 minutes later or 8 hours later and can be confident that I have beer clean kegs. I know everyone can't swing one, but look at where else you can cut costs to get the best one you can. You won't regret it.
Brewmaster / Founder
Naked Dove Brewing Company