On behalf of more than one of my players (mostly one but two others have also expressed less-than-happiness)
One thing is the part where every last one of my players appear to have decided that high dex and studded leather is the universal only solution to AC that's worth it to them, and heavy armors are really much too bad to be considered.
Another is that they are currently refusing to consider special materials due to price scaling.
A third is that they are really, remarkably less than fond of noisy (I have yet to see ONE noisy armor in play, possibly because they like their stealth).
I'm sure all those things have been covered wall up and down (a solution soon would be appreciated, but alas, not the point here).
But the thing I am here to mention is the armor potency difference for heavy armors and all the other armors.
So what I have experienced is an enormous dissatisfaction with the part where heavy armor is one magic item level higher than all the other magic armors.
I think the point here is that the players don't really feel that the heavy armors are so much better for their AC that they are worth the higher level enchantment. Were their bonuses actually remarkably better than lighter armors, that would be a different case, but currently, the difference in heavy armors is causing enough anooyance that out of 5 sessions we have yet to have one where heavy armor was not the main point of complaint.