330
I would say more like 15-20 yrs as any new joiner and probably a good bunch that have joined in the last year or so would get there commands well before they ever see the 330. There's that many waiting on the seniority list.
As tight seat suggests 1 or 2 new airframes would change all that. But MON has been unsuccessful in acquiring the XL ones so it will be interesting to see if/where they find any.
Instinct - Officially 4 757's go in Nov. Hoping to source 2x757 and 2x321 to replace. Any more than that is unknown.