The M3 and M3 Pro are still compelling to those of us still on Intel MacBooks. But when you consider that the M3 Pro w/ 36GB and 1TB drive is only $400 cheaper than the M3 Max, it's a tough call. My 2019 13" MBP i5 is showing its age as Lightroom crawls. The M3 Pro would still be a hell of an upgrade for me, but if I were coming from an M1, not so much.M3 and M3 Max are significant leaps forward.
M3 Pro is a disappointment. The "middle option" doesn't seem as appealing anymore. If they can get a 20% CPU performance improvement out of M3 and 50% out of the Max, then only 6% for the Pro is inexcusable. The Pro shouldn't be the "ugly stepchild" that makes you go for the Max. Prior to M3, it was a significant improvement over the base chip and was a true "middle of the road" option. It doesn't seem to be anymore.