Couldn't find a reasonably priced 14" Apple Refurb M1 Max within driving distance (2.5 hours 1-way!), so snagged an open box apple certified M1 Pro 16" refurb. Did the same test run of projects -- yup, buttery smooth on this 16" M1 Pro base model 16/512 with minimal GPU/CPU usage and no jitteriness while scrolling/zooming.
Assuming this new-to-me M1 Pro checks out, I'll probably keep it since the delta between it and trading in my old 16" M1 Pro to Apple is less than the price to replace the battery. Plus I really like the silver color (had space gray). I'll also get to re-up my warranty + add Apple Care+ again--and a fresh battery! This is also about 1/3 the price of keeping the 16" M3 Max holy moly.
Seems bizarre to go through all this just to come full circle back to a 16" M1 Pro for my larger rig. But it works.
Still need a 14" for certain road situations, so Best Buy also has a sale on the 14" M3 Max 30 core GPU right now + a special for 10% cashback off the purchase if I apply for a card. F-it, I've now got that rig to test + a new card. Not as great of a deal (about 17% off) but still better than nothing.
So if anyone is looking for an M1 Pro 14" 16/1tb apple certified refurb (should be $1200 or so), one should be popping up in Micro Center's inventory anytime now.
I'll let y'all know how the M3 Max goes--probably fine I'm sure.