Brightonuk,

The short answer is yes the 3000 will work with x-10 via the IR-543. The codes are readily available.

On the other hand URC has dimmers specifically to talk direct RF with the MX-3000 and all of their other remotes. Lamp Modules are also available. The advantage is that they are lutron. That also means they are more expensive than X-10.

I also live in Plantation, FL. I have found the Insteon to be a bit unreliable and prone to failure. X-10 is just a little too low grade. I have never used Z-Wave but there may be an IR converter for it. Next up the chain would be UPB from Simply Automated or Pulseworx products. Still not a high end choice but better than X-10 and Insteon. They have IR keypads that can be assigned to scenes or loads then run by your remote.