I went the whole nine yards on the upgrade, the Keel, the Ekos SE and a new Akiva cartridge for good measure. Threw in a Cirkus II while they were at it. Was it expensive? Absolutely! Did it make a huge difference? You betcha. The improvement in low level detail was absolutely amazing. And the noise floor was significantly reduced. Highly recommended if you can afford it.
Any experience with the new Linn Sondek upgrades?
The new arm seems monstrously priced since I just managed to do my upgrade three years ago. It was worth it but another five grand seems nuts. Perhaps the base upgrade at half that provides more benefit per kilo-buck, and it more in line with their theory that the platter comes first. Its gonna take me another three years before I can squirrel away that much if the new arm is that big an improvement.