Hi A.,
Firstly, good luck with this new transition. You are about to hit the most fun times of your life. (My opinion, of course! I loved every stage, but, OMG, my dd is 20 months now, and WHAT A BLAST WE ARE HAVING!)
Secondly, it only took 4 nights to actually get my dd off the bottle, but we didn't start 'til she was almost 15 months because SHE HATED MILK! I know, hard to believe-what baby hates milk(?!), but I was determined not to let her drink milk from a bottle, only to find I had a strange one who hated milk altogether. (She loves it now, though.) Anyway, I tried several kinds of cups before settling on one, so don't waste a ton of money on one brand until you know which is the best for her. We ended up settling on the leak-proof straw cups instead of a sippy. It makes eating out a lot easier, too, because she can drink from a cup with a straw instead of only a sippy. The 4 day weaning explanation is not meant to sound boastful, because we practiced with different cups since she was six months old, really. I just wanted to give you some possible positive viewpoint on the bottle weaning process--it may not be too brutal.
Just remember to stick to your guns. No matter how much she begs or protests, NEVER give her whole milk in a bottle. Once is all it takes to get that manipulation thing going, and that is even harder to 'wean' than the bottle alone. ;)
Also, I gave (still do) my dd a cup with no lid when she is in her highchair. I used to remove her shirt to avoid staining, then let her practice drinking milk, formula, water, diluted juice, etc. from an open cup. Really helps for the future, too. She feels like such a big girl when she drinks from an open cup. What an easy way to maintain that 'good-guy' image with your dd. I am always looking for positive reinforcement techniques for my angel, and this one is REALLY easy.
Hope some of this helps. :)