Best Bang For The Buck I've Ever Spent

Recently installed the Primacoustic London 12 acoustic panel kit purchased from Sweetwater.
Install couldn't have been easier, just a few hours.
Made sure to cover all first reflection points front wall/ceiling/side walls/rear wall.
Less than $800.00, free shipping, no tax, delivered to my home.
Have a dedicated listening room, a dedicated AC line, and have spent many hours on speaker and listening seat positions.
The packaging from Primacoustic was first-rate.
The service from Sweetwater was too.
The difference in resolution was startling.
FWIW, IMO, before anyone spends $ on another piece of gear, spend it on sound treatments.
I'm sure glad I did.
Happy listening...

Tom