I like the JLC Master Control Perpetual because of its size (especially the case thinness). The calendar-setting mechanism is also one of the simplest with a single pusher to set all indicators.
The GO perpetual with its window indicators and large date is the easiest to read (IMHO) of all perpetuals.
The Moser has an elegant, uncluttered design which is very appealing. And setting is simple and can be done bi-directionally (I believe).
tempusfugit