Something to factor in are the relative benefits of both places, especially if you have a family!
I have no specific info on either place relative to benefits, but can offer some thoughts based on my Wife's employment (was Brigham & Womens Hospital, now she is a Partners Healthcare employee) and their benefits. Partners owns MGH, BWH, Dana Farber and a number of other hospitals in the area. Each has its own specific benefits package, but you can get some ideas from the following:
- BCBS Medical, dental, and eyecare - when my Wife joined BWH in 1998 the sum total for family plan cost us something like $15.00/week!! When she became a Partners employee (her group supports all the hospitals, so they brought them all under one umbrella) our current cost for this is now $176.00/wk BUT they reimburse $122.10/week towards that cost so that our net cost is currently $53.90/week.
- Days off - She started with 30 days off/year (this included holidays and sick time as "personal time"). System is such that you don't have to call in and lie that you're sick to take a personal day. Since she's been there >5 years I think she now gets something like 35 days/year.
- Cell phone discounts - Not widely known but any Partners employee (and that should include MGH as a fully owned subsidiary) gets 23% discount on SprintPCS each month. They also have lesser discounts with other cell phone providers (I heard 13% with Verizon). [Worth noting: MANY employers have cell discount plans (or % discounts) that aren't "published" (not just the base rate cheapie plan usually posted by HR). I found a list for SprintPCS on www.sprintusers.com
forums after we were paying full fare for ~ 6 months.]
- When she was a BWH employee they used to get a week's pay as a bonus at Christmas time plus 1/2 day off to go shopping (or home early). Neither is the case for Partners employees.
I'm sure that there is a lot more that I'm unaware of, and like I said, MGHs benefits are likely to be somewhat different vs. what BWH or Partners does, but not grossly so.
Hope this gives some food for thought and is helpful.