Right? I mean, I think the old school 1230 along with the Triple XXX and JSX Sheffileds are actually very underrated speakers.
After speaking with John at Peavey, apparently they've had a hell of a time with reliable sourcing when it comes to speaker components over the years, so the same models can vary in sound WILDLY. I can say this seems to be true, as I had 2 5150 slant cabs at the same time. One sounded pretty damn ok. The other one was one of the worst sounds I'd ever heard come out of a 412 box.
But yeah, the new 1230+ sounds killer. I think the only weak area in the speaker might be an over abundance of low mids, it may cloud up a full sounding mix, but won't know until I record with em