Here is a link that does the summary of various refer systems vs Engle. Notice the start amps on piston compressors...unless you are on a super yacht these low draw units are the way to go. I have a new mr40 for sale, still in box, never fired up, reason for selling, I need a SR70 for the new boat. Currently using another mr40 and a mt35. I have a Dometic that I may sell also so as to have 2 SR 70 built refrigerators. Currently I have a frig-freezer that pulls almost as much after inversion as all of the Engles combined. I have been using my older mr40 for 2 years and I really like it...obviously since I am adding to the collection.
ENGEL USA - AC/DC FRIDGE/FREEZERS | PERFORMANCE COOLERS - - Fridge/Freezer Features