Latest Firmware Update: How much closer does White/Silver get to Golds

[MountainGuy]

I had a pair of Silver. Never really satisfied because it lacked the resolution and transient speed.  The Gold was a very significant step up and satisfying.   I no longer own the Silver.

However, would like a 2nd pair without the gold price. Some owners of White and Silver report that the latest update made the White really improve in soundstage etc.  I don't need  the loud volume but want the quality.

Anyone with both White OR Silver and Gold?   Any sense of how much closer in tonal quality or timbre does the latest software update get the While or Silver to the Golds?

Thanks.