They're all solid receivers. The Onkyo NR807 has all the HD radio features and the ethernet port.
You must be in Canada. Because the 9140 is basically Elite 23 in the USA and I read somewhere the 6295 was available at Futureshop or another Canadian vendor.
You probably can't go wrong with any of them. If you like the Net radio features of the Onkyo get that, if you need the dual HDMI outputs of the 9140 get that one. I don't know the advantages of the 6295 as it is a new model.
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