If you want a significant upgrade for your LP12, first thing I can say is put in on a high quality wall shelf. I use a Sound Organization wall mount. These run about $250.00-$300.00 retail. Another huge upgrade is a SAP Relaxa Isolation system. I use the Relaxa 1. I think the current model is called the Relaxa 3. They are about $800.00 retail. One would probably think that a fully suspended table would not benefit from a system like the Relaxa because it performs like a suspension system. The only reason it does benefit is because it is mounted on a wall system which makes the LP12 immune to footfall and other room vibrations. Otherwise, it would not benefit. So, start with a wall system and them get a SAP isolation system. The combination of the wall system and Relaxa isolation results in an upgrade equivalent to an arm upgrade. I can't wait to hear how the table sounds with an upgraded arm.