I use an old Aurora AS1512X that I bought nearly 8 years ago (one of the few of the more reasonably priced crosscuts at the time that would also do CDs/DVDs and credit cards as well as 15sheets at a time). One thing to remember is that they do need periodic cleaning and oiling, depending upon how much shredding you do. Only weakness that I found was weight (cutting head is very heavy) and the wheels on the base are mounted weakly (broke two of the mountings – don’t roll it on carpet, only hard floor). Power rating on this one is about 400Watts +/-. – unfortunately it is no longer available. The one from the same maker that looks the closest on specs is AU1217XB.
NOTE: I know that it says it will take paperclips and staples, but I avoid feeding it these so as to keep it healthy. Paperclips can bend and get caught in the followers that strip the cut paper off of the blades. These followers are not as sturdy as the blades on almost all shredders.