Saeco makes a great mould. You also might want to try RCBS
RCBS and Lyman top punches will work in RCBS or Lyman sizers,(they are interchangable) but not in a Saeco sizer. However you can order Saeco top punches for the RCBS or Lyman Sizer. I try to stick with RCBS or Lyman just for that reason, but have used Saeco in the past with great success.
I'm curious as to what problems you encountered with the Lyman mould.