I've had an unprecedented number of salary negotiations over the past two months. I had multiple offers to choose from and they were all pretty good on the sur

I've had an unprecedented number of salary negotiations over the past two months. I had multiple offers to choose from and they were all pretty good on the surface. Having "I can walk away if I need to" in the back of my mind made the entire experience more relaxing (on my end). I stated with "I'm looking at X, Y, and Z companies" in the first interaction with each of the three interviews. Company X gave me an offer of $AMOUNT in an email (before a formal discussion about salary). $AMOUNT was a really nice bump from my current salary already. When it came time to talk "how much do you expect" for Y company I told them I had X offer for $AMOUNT and would be interested to know what they could offer. Y company came back with $AMOUNT + 10%. I used was up front with company Z about the previous two offers. They offered me $AMOUNT + 17%. Note: company Z was slightly worse compared to X and Y. I had a meeting with company X and told them about the above. They agreed to $AMOUNT + 17%. I took company X in the end.