1499-5661 is a 25 mfd 370 volt
1499-5671 is a 25 mfd 370 volt
1499-5681 is a 35 mfd 370 volt
1499-5721 is a 45 mfd 370 volt
1499-5741 is a 50 mfd 250 volt
Do you're own search for these numbers to see what their mfd is. I did the best I could to translate them with google and that drawing.
The higher voltage the better, the voltage rating usually makes the capacitor larger in size as it goes up but the higher voltage rating lets the capacitor last longer. It just has to do with it's internal insulation value. The MFD is the actual working part of the number that affects the motor inside the compressor.