Decided we need one for our 2 up 2 down cottage (only got an ancient yet indestructible Dyson DC02 upstairs and a massive Vax wet and dry r2d2 looking thing downstairs). I understand the charge only last about 20mins and it won't be as powerful as a corded one. So what have you got and what have you had? Would you recommend one? I also want one that can hang on the wall to charge. We don't have any pets now so don't need one designed specifically for that. Thanks in advance.