If you are thinking of Klipsch, it seems the older they are the better they are. But if the price is right, what the heck. They work OK next to the wall. I think I would go for Altecs first as well.
A few years ago I found a set of Electro Voice Regency 3s for cheap. They needed new wiring and new crossover controls. They are designed to use the corner of the room, that is, you put them all the way into the corner. If you don't do that they will not play bass as the cabinet and corner form a sort of horn. Anyway, I just set them up by the Snell Bs I had at the time. They were immediately more spacious, more dynamic. I expected the greater impact, but the increased resolution and depth of the soundstage floored me. Instruments hung in the air, expressed with great timbrel accuracy, delicacy where it was needed and power where needed as well. In short, played every aspect you wanted out of a speaker better than the Snells, except for the bass.
Since I was never able to put them in the corners, I never found out if that was still true when they were properly set up, but this experience let me know in spades that horns had something to offer.