SGX is my recommendation based on budget and material mix. LOH style chucks are available and the lap adapter is not block style specific as it merely "slides" into chuck. SGX support and parts should not be an issue since so many of these are in use. I would consider saving money on the your blocking system and invest in new cylinder machines. These are high wear machines with unknown issues. Also add chilling unit and reclaim system from blocking medium used either alloy or Freebond "wax". …