vacuum suggestions

Could you please tell me what your favorite CANISTER vacuum cleaner is, including all the specs? Ours just broke and there are no more Kenmore parts available to fix it, due to Sears going out of business. So we do not want to buy a Kenmore. BTW, we have lots of long dog hair to pick up, but looking for suggestions whether you know it's good with LONG pet hair or not. And please specify if you know if it is! Thank you. -Becky