Oops -- I misread your original question; clearly, I thought you were asking which Chanel perfume smelled the best, and I was only too happy to elaborate. Of the three Chance editions, I think I prefer the original
I love Coco, because it's a bold, heady scent (which totally reflects its 80s-era inception) -- but I couldn't wear it every day. I also love Gardénia -- which smells more like a white flower / tuberose bouquet -- to me, it doesn't smell like gardenia. I love Cristalle, because it's fresh and citrusy. I like Beige for being subtle and understated.
Since I don't like floral aldehydes, I actually don't care for No. 5 or No. 22.