Microsoft is pretty good, indeed, but they don't match the Google pay. A senior at Google pulls 350 (add free food and gym to that), while a principal at Microsoft will be lucky to cross 250 (no free food and no gym on site). Sample size: a few tens of people. And the limited housing supply means that prices are tuned to the more successful folks.
Amazon seems to be very focused on squeezing out most out of its employees. The curious vesting schedule means you instantly lose 10% of your stock grant value. The company expects you to pull more hours and do some real oncall duties: this means less free time for you and less pay/hour rate. Good and gym are out if question. And don't forget to pay for your parking spot. IMHO, if you aren't big enough to demand a custom contract, you don't go to Amazon unless you have no better choices.
My question is still open: what are those better places?