try them out
Best thing for you mate as you really seem so unsure of what you want , is to pop down to a local walk on site , training site etc and ask a couple of people that have the EGO & DM if they mind you popping a few off..
Seems to me also that that you are some what lacking in knowledge of any marker, so just out of simplicity i would probably sway towards an EGO as the oled board will be easier for you to set up and also maintenance is alot easier..
Depending on where you live i will be @ freekz on the 4th you are more than welcome to come a test out one of my EGO's
Regards
Carl