I believe each set of those speakers reommends 10 - 100 wpc receiver for optimum operation. I personally used to own the Infinity TSS-450s, which sounded a tad bright to my ears but were good for their price range, I would imagine the TSS-750s to be very similar for the price vs performance. Athena, another excellent sounding speaker to me, I also own Athena, but I own the Micra 6 system (paired with a Denon AVR-1906 receiver) and it sounds superb. For the money I think Athenas hold the crown for most bang for the buck in the low cost category. I do not think you can go wrong either way here IMO, however, I would lean towards the Athenas. Just my opinion and 2 cents, for what its worth, I hope this helped.