If it was me I would go for the Kato model (they run so well and they have better looking wheels) and replace the pantos with Bachmann units (ordered as spare parts). Yes, sound decoder install is not plug-n-play, but I love a challenge.

As for throwing traction tires - if they are handled gently, the tires should stay put. But I'm a Kato fan-boy and my layout is NTRAK layout, so the super details are not as important as sturdiness.
But if the paint schemes are not correct then that might weight on your decision (I'm not a PRR expert).
And in the year 2025 the Arnold GG1s are fine museum pieces.
