Don't want to get too off topic here or make it sound like
I am PSB fanboy, but besides the decent amp size of Gold-I they really need at least 16x16 size space to sound good.
This means pull them 5-6ft out from speaker wall to get best imaging etc.
Not saying they are unbeatable at their price level, but they offer good value for audiophile. I'm sure the Platinums will sound even better but they should at 2x the price.
I own some PSB Silver-I also and think they are a little more detailed and image even better vs Gold-I, but overall I prefer the Gold-I sound.