I use an Analyser 500 which is a version of the Analyser Pro designed specifically for the Ilford 500 Multigrade system. I've not yet fully nailed down a calibration scheme, but I'm on my way. Once calibrated, however, the unit is exceptional. My first test exposure using Ilford Multigrade IV RC (for which the meter comes factory-calibrated) was dead on. All I could say was, "wow!".

Mine shares duty between a Leitz Focomat IIc and a Durst 138S, each fitted with the Ilford 500 head.