UM Nitrox 100 vs Dayun DY80S:
UM Nitrox 100 is priced at Tk 112000 while Dayun DY80S is the cheaper one priced at Tk 78000.
Dayun DY80S is the fuel efficient one with a claimed mileage of 60 kmpl while the claimed figure for UM Nitrox 100 is 60 Kmpl.