I have used the LUNA for my Virology studies. It has a small and lab friendly footprint for the bench-top. I also like the automatic calculation function which was easy to use and provided me with very accurate and reproducible results for my cell studies. LUNA has provided me the fastest platform to count my cells as compared to manual counting. So far after evaluating several brands, LUNA still proves to be the fastest. I am very impressed and glad with the purchase.