Yeah, I think most people consider #174 to be the end of the prime Silver Age Flash.

That doesn't necessarily mean DC will stop there, but it will certainly mark an exit point for a lot of people who have been buying the Flash Archives I would think.

"As for contentment, that is a myth.  Give a man everything he wishes and he will be unhappy, because he didn't wish for more; give him more, and he will die of his worries.  Only a turtle, asleep on a sunny log, knows contentment!"
-Merlin to Prince Valiant

            Hal Foster 3-7-43