Microsoft

1. Good benefits.
2. Very brilliant people, mostly in the lower part of the ladder.
3. Opportunity to move around to other teams (can be better).

Many of the SDET leads lack technical knowledge, and they seem more focused on political fights to protect their jobs. Based on feedback from SDET friends, their leads more tend to use job security to intimidate the poorer SDETs. As an SDE, I feel much better being respected by my lead and previous leads. So:

1. If you are a good developer, don't go for SDET positions, unless you really need a job.
2. If you hope to apply for a green card, stay away from Microsoft, as they laid off people and cannot begin the process in one or more years.
3. If you want to keep yourself marketable, don't come. You'll be lost in all the weird Windows technologies, which are hard to adjust to and will drain your energy with their slowness.
4. If you believe you are good at playing the people game, Microsoft is heaven for you.

Don't fire low-level people; instead, target senior SDET leads or test managers.