PG with A5 is basically a PG+
59 with an A2 has more mids,sweeter sounding,loses tightness in the lows,and a bit of it's highs...Similar to a PG but the mids are different...
I've done all this and I prefer the 59 stock with it's A5 magnet...An A3 magnet in the 59 is pretty cool also...