"Honeck makes the brass and percussion very prominent, sometimes to the extent that they almost drown out string & woodwinds"
But the interesting thing is that they don't! Unlike the Solti/CSO 'blast-a-thon' performances (I witnessed one live, so people can't say that it was purely Decca's fault), Honeck and the PSO 'time' when to let the brass and percussion stick out, and not at just every available opportunity. Woodwinds are there when you want to hear them (bassoons could be a tad stronger, but that's nearly always the case). The PSO strings are astonishingly good in the finale, and the same holds true for those strings in the famous Adagietto to their recent M5.
I totally agree with the high praise for the Honeck/PSO M3 and feel just as strongly for their M5. M1 and M4 I'm still less convinced by, but they both certainly have their fine moments as well (great finale to M1). More than anything, there's just a dark 'earthiness' and 'grittiness' that I find so totally appropriate for Mahler - a composer fully attuned with nature in both a tangible, physical way, and in an intellectual way (via literature).