Hey Guy's in my previous post I stated that I'm in love with the new products that fieldpiece has out there! I have a question about to test instruments that I'm saving up to get! 1) The SMAN3: If I purchase this do I still need to get a micron gauge when I'm pulling a vacuum on a 410A unit? 2) I'm looking at the new HVAC GUIDE and would like to know will this be a good purchase along with the SMAN3? And how would they compliment each other in the field? I almost have my money together and want to make sure I'm not over killing myself with these tools!