I have been using FACAria II (upgraded later to III) for the last 9 years to sort from yeast, to bacteria to mammalian cells. Specially after the fluidic upgrade, I really cannot complain about the instrument. In my current company we have been thinking about buying a new cell sorter. The Aria is at the top of our wish-list but I would like to know if anybody has used instruments with similar performances, in term of quality of the sort, event rate etc. etc.