In theory if they do the same work - the 23 will have a higher wear factor per hour - but you will spend less hours doing the same work. Speed will produce more wear - If you keep both machines for many years - you will spend marginally more on the bigger machine keeping it up to specifications. If you trade often the 23 will potentially have more value (if you keep it up to spec's.) If you keep it long enough neither will have much value. (think 403 vs 503) Then there is the value of getting the crop out of the field in a difficult year - what's that worth to youIJ best, bill koob