I've seen this site referenced a few times here on the forum.
403(b)wise . The Leading Source of 403(b) Information on the Web
One potential benefit to rolling to the 403(b) from a 401 (k), according to this table and other resources I have seen: since you have separated from service, penalty-free withdrawals can begin at 55 instead of 59-1/2.
Comparison of Deferred Income Plans
I'd confirm this from several sources before counting on it, however.
No doubt a continuous prosperity, though spendthrift, is preferable to an economy thriftily moral, though lean. Nevertheless, that prosperity would seem more soundly shored if, by a saving grace, more of us had the grace to save.
Life Magazine editorial, 1956