In our office we have four comparators, well-liked and well-used.
"The Collator" model FC911 fingerprint comparator is what we have, and now "The Collator II" is being made and marketed here in the UK by
ACO Electronics.
I can highly recommend this product. It features high magnification onto a large, flat screen which can be viewed from more than just one angle (a problem with some other comparators I have used), variable focus and light intensity, and a screen that takes water-soluble unipen markers and wipes clean with a little water.
They are quiet but do not have any height adjustment feature (though this has never been an issue with us).