Closing Recommendation
Both machines sit in the same class but suit different owners, so pick by your hours and your ground. Choose the Volvo EC220 when the machine will run long, hard hours on mining, quarry or highway work for years, and you have a workshop close enough to service it properly, because its power and tough build are made for exactly that. Choose the Hyundai R220LS SMART X Plus when you want careful diesel use, a lower cost to buy and support that reaches into smaller districts, and when your work is on canal banks, embankments or soft soil where its longer undercarriage keeps the machine steady. Check the nearest workshop for both before you sign. So match the machine to your work: EC220 for heavy continuous hours, R220LS SMART X Plus for lower cost and slope work.