Pros
Seemingly better pay. Stocks (But you may not stay here for 4 years to reap the benefits). Smart people.
Cons
They hire you as Software "DEVELOPMENT" engineer and making you do everything : QA, Ops etc. They have short project deadlines (<1 month sometimes). This translates to excruciatingly long hours of work. It drastically impacted my family life. Pager supports keeps you awake on a friday night. I used to see fellow Amazonians carrying pager to museums, parks with their family. They may have to stop having fun and work on thier laptop at parks. The compensation sounds interesting for first two years and then falls flat. They talk about frugality all the time which means hardly any office get-togethers. I would discourage Amazon as your future workplace unless work is everything you have in life. Not a engineer friendly company. I moved to bay area and a very happy person now working for Google.