etout00 Senior Member Joined: 1 Sep 2011 Posts: 83 Location: Upstate NY Expertise: I love coffee
Espresso: La Marzocco GS/3 MP Grinder: Compak K10 WBC
Posted Sun Oct 7, 2012, 6:43am Subject: Re: Vibe vs Rotary pump machines
There is absolutely zero difference in the cup. I've tested two otherwise identical machines (the laScala Butterfly and Eroica) side by side in a blind taste test and pump type has no effect on the end result. You can get a zillion other reasons to buy one pump or the other, but as far as the quality of the output is concerned, it doesn't matter.
+1 agreed. My Faema C84 came from the factory with a vibe pump and I recently converted it to a rotary vane setup. I have noticed no distinguishable difference in the cup, or at least none that I can discern. My motivation for the conversion was because I disliked the noise of the vibe pump..... converting to rotary was such a huge difference in noise reduction, well worth it in my honest opinion.
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