Should you buy Sonalika DI 740 III or Solis 5515 E 4WD? Find out the best tractor for your requirements based on price, engine power, transmission, features and other specifications. The Sonalika DI 740 III is a 42 HP tractor, whereas Solis 5515 E 4WD is a 55 HP tractor. The Sonalika DI 740 III price is INR 646,000 , whereas the Solis 5515 E 4WD price is INR 1,060,000.