Any of you have any experience with the newer trucks (2010 and newer) which conform to the latest emissions requirements? Seems most have the separate tank for urea, and others, like International, have a non urea system. Aside from the higher purchase costs and hassle of buying and adding urea to the spare tank, any problems with using these trucks in the residential tree work setting, like poor performance, faulty operation, or hard to fix problems or are they like any other truck from an operational/use standpoint?