I picked up a D123 a couple years ago. They're nice sounding speakers for sure, but I've mostly used it in my deluxe reverb at home and have fears of pushing it too hard. They sound good cranked up in the deluxe, but I don't know well they'd hold up pumping 50 or 100 watts through them for extended periods. There's tons of them out there to be had and most with original cones. An they're usually reasonably priced. They seem to have withstood the test of time, but I suspect that's because they've mostly been used in home audio applications.
If you were always playing mic'd they'd definitely do the job, but not with the "stage thump" most of us like.