Objectively, there's not much room for argument: in terms of accuracy and detail the Trumpeter Buckley-class kit is superior to the old Revell one. And Ed's right: if you buy the Revell kit and the Gold Medal detail set, you'll spend about as much as you will for the Trumpeter kit. (On the other hand - if you buy the Trumpeter kit and the Gold Medal detail set for it...well, never mind.) In the name of fairness, though, it perhaps should be pointed out that the Revell kit does not (unless the reissue is significantly different from the original) have "solid" guard rails cast in with the hull and decks, like most kits of that era did. It has stanchions molded in strips, which are to be glued into troughs molded onto the edge of the maindeck. As I remember, the guardrails on the upper deck were molded integrally with the deck - as though they were folded down, as they probably would be when the torpedo tubes were being worked.) If I remember correctly, the original release included a card of grey thread for making the guard rails themselves - along with the rest of the rigging.
It certainly was one of the best - if not the best - of the Revell warship kits prior to...well, it could be argued that Revell of the U.S. never did issue a better 20th-century warship. (Hmm...maybe the Emden, or the Vosper or Elco PT boat, or just maybe the best of the 1/720 kits. But the best warships carrying the Revell label since the Buckley was released in 1958 have orginated with either Revell Germany, Skywave, or Italeri.) It featured such things as washdeck hoses and swabs (molded integrally with the superstructure bulkheads), helmets for the 3" gun crews, and coils of line lying on the forecastle deck. (It looked like the masters had been sculpted by the same people who did the Flying Cloud, Victory, and Eagle.) The big exceptions to the overall state-of-the-art standard were the guns, which, for some reason or other, bore scarcely any resemblance to the real thing. The 3" ones, as I remember, were especially weak; about the only way to improve them would be to replace them.
If (heaven forbid) I were looking for the most accurate destroyer escort kit availale, I'd certainly buy the Trumpeter one. But I may just succumb to the urge to buy a reissued Revell one - and maybe even build it. And I'd like to see what it would look like with all those Gold Medal parts added.
Youth, talent, hard work, and enthusiasm are no match for old age and treachery.