Sorry i am not using HP one
but I am using EPSON CX1500. I was also in d same dilemma whether to buy a HP all in 1 or any other as i was an old fan of HP deskjets. i did a lot of survey 4 it 6 mnths ago & decided to leave HP.
I was gettin the same benifts of HP, infact even better as i knew, in a price dat was 1k less den same, with warranty of 1 yr. d main benifit of EPSON is i can find its black cartridges in 150/10ml & color for 250/10ml while HP cartridges costs nearly black-450/8ml & color 850/8ml Check dis out, its really nice product from EPSON no probes till now....
remember 1thing while buying all in 1, it must have direct scan to print option(i.e. Zerox) where PC need not be connected.