Noticeable Sound Improvements With Speaker Re-cap?

Hello!

I own a pair of Infinity RS 4.5 speakers. I drive them with either a Krell FPB 600 or a Sunfire Signature 600.

Right now, they sound near perfect to my ears.

I keep reading in multiple posts that a re-cap will take them to the next level.

They are over 40 years old, so they are definitely due for new capacitors.

My question is this, for anyone who has performed a full re-cap on their speakers, what were some of the most noticeable sound improvements?

Thanks in advance!