Long-term reliability? Well, let's see. Two of my F2ASs, purchased new in May 1979 and August 1979, respectively, are still going strong, and are both trusted enough to (currently) shoot E100 and E100VS. Three other F2AS bodies, each purchased used, vintages 1977, 1979 (recently Soverized) and 1980, also see frequent use. F2A, number one (purchased new in the spring of 1980) continues to function without issue as does a used 1978 body purchased from KEH a few years back; only a second 1980 F2A e**y* purchase has ever had "issues" (i.e. Wonky Meter Syndrome"). The "plain Jane" F2s (DE-1s), for their part, have performed, and continue to perform, like old Volvos.
My advice? Decide whether you would prefer LED or needle, conduct your hunt and then send your purchase to Sover Wong for a "Soverization." For the cost of a few hundred Federal Reserve Notes, Mr Wong will return to you an F2 that will feel and perform as new. To date, he has done CLAs on a couple of my F2 bodies and I am absolutely impressed with the man's skills, knowledge and workmanship. Needless to say, several more bodies, and their respective motor drives, will be forwarded in the near future...