also since analog is all i knew i was was so used to seeing the needle move around now i dont see the needle you see the digital number show up. sometimes ill forget to change the refrigerant type, these are all basic things that you will get used to but once ive used them several times you get better at it. at first they were a pain because i wasnt used to all the functions. it will take me time to read all the numbers and see whats going on. but in the end i prefer the digitals. they are more accurate, i always bought all my own tools. most companies supply you with some chinese bullsh*t then when it breaks they get upset and talk crap. i rather not hear there mouth so i try to buy quality tools myself.