twn has it right. II you are in a position to leave, take the ERP.
I saw something like this coming last June when a highly productive older engineer at my grade level was ISP'ed via the secret criteria. So I got my ducks in a row and was prepared.
I was expecting something like the VSP that was offered last year, but was very happy with what the ERP included. In my view, I just got another year+ of retirement while i'm younger and can enjoy it. My wife and friends say they can't believe how relaxed I am. My blood pressure is lower already. It didn't take long to realize the toll that was being taken on my well being.
Folks, it's just a job - not you life or self worth. If you can afford to go you should take it