Yes, I'm one of those nuts who bought all three. But Navigon has been returned.Briefly these are the differences:----------------------------------Sygic-------TomTom-------NavigonVisual speed warning:-------------- Yes -------Yes----------- NoAudio speed warning: --------------Yes ------- No ----------- NoRed light camera warning: ----------Yes -------Yes----------- NoSpeed camera warning -------------Yes -------Yes------------NoWarn when approach school:--------Yes --------No ----------- NoUse standard iPhone keyboard--------No --------Yes-----------YesPinch/spread maps------------------ No --------Yes ---------- YesSimulation of trip ------------------- Yes--------Yes --------- Not reallyEasy to read navigation screen-------Yes--------Yes --------- Not so goodRoad contains speed limit------------ 99.99%---99.99% ------ 0.00001%?How up to date is the map------------Very -----Very ------ Not as to datePrice--------------------------------$80--------$100-------- $70Uses iphone interface ---------------Not at all---fully---------- fullyGPS reception strength ------------- Strongest--Medium------WeakestChoose night and day skin----------- No---------Yes --------- NoUser-defined distance b4 POI warning--Yes----does not warn--Does not warnContact integration------------------ No ------ Yes ---------- YesPOI quality-------------------------- Good -----Good--------Not as good.Reality view--------------------------No--------No-----------YesHope this helpsMy preference now:1. Sygic2. TomTOm3. NavigonMy most likely long term preference:1. TomTom2. Sygic3. NavigonI'm defnitely not going to settle for Navigon. However, I'm still quite evenly split between TT and Sygic. This could flip either way depending on what they do in the next version.If no more update is done to existing version, my choice is Sygic. However, once TomTom fixed the overspeeding audio warning, and provide warning in school zone, TT will be undisputed Champion.My sticking with Sygic is very likely to be a short, temporary thing. I'm quite sure TomTom will fix the above problem, so if you have to take a bet, I'll say go with TomTom still.