I think in this price range you should go for Patek, it's more prestigous as a watch brand over Choppard. However I do like Choppard Happy for jewerly as other posters have mentioned.
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My thoughts (2 cents) :
As your first watch, a classic piece would be apt. Personally I'm for watch movements i.e. mechanical watches (self-winding or automatic, i.e. non-quartz) since one is already paying a certain price. I like the designs on Patek's women watches but alas they are quartz. If you're looking for a classy piece that would go from day to evening (dressier), I think the Jaeger-Lecoultre Reverso Duo is a great investment. For slightly less than the price of the Patek 24, you get an in house movement with a classic art-deco style on one face (for daily) and diamonds embedded on the other (evening).
Another good thing about the JLC watch is you could change the strap. Get the stainless steel one now and buy a leather/satin strap as add-on (cost more if you do it the other way round). You could have 4 watches (different looks) in one!