I have been using an Oceanic PX2/Alpha 7 reg setup for quiet some time now and love it very much. Have not failed me despite using it for 2 years and my rough handling. Due to service support and spare parts availability (Asia region), I would have to upgrade it. I am seriously considering either the Zeagle flathead 4 or Seac-Sub Diamond Ice (no problems for dealer serice support and spare parts for these 2). Would appreciate if anyone can provide a feedback or comment on the Flathead 4 or Diamond Ice. Thanks .