the perpetual is more beautiful and has more 'going on'. The Dato is more of a standard bearer in terms of collecting... it represents The Ultimate Chrono... (some would say). I think it is 'up there'... but the point is, the Dato has become an emblem of The Best. The perpetual, while stunning and exceptionally exquisite, has not achieved this iconic status. If this sort of thinking matters to you, the Dato is the only choice. But I like the perpetual better. I would get the perpetual! I prefer the sharp hands, as opposed to the less sharp hands of the Dato. I love the moonphase--it is Lange's divine element, that moon... and I love the fine detail of the dial, which some might say is 'busy'. (I used to think so.) BUt when you want to really gaze at a dial, and explore the details and fine elements... the perpetual must be one of the best to do so... I owned a Dato for a while... and I found it very, very cold. Even the movement did not move me, after the initial 'awe' wore off... The perpetual has color and a levels... and many aspects that are warmer, even in platinum... although I would choose rose... well, anyway, as they say, no bad choice here--both Dream watches. Have fun and good luck. This message has been edited by Mostel on 2011-07-31 22:40:28