well yes, but i would go with the onkyo, that onkyo can provide a good clean 65wpc with headroom to spare, the sony will probably start distorting at around 40wpc ACD. it is certainly not going to give out 600w or 400w or even 200w. the onkyo will certainly serve you better for years to come, sony is not a very good company to buy audio products from if your looking for high quality stuff. keep in mind sony markets their products to the mid-fi class. the onkyo is not expensive at all, you will be glad you went with it.
and those sony's WILL underpower your system, they may be able to give out loud sound but not clean unclipped sound. and just so you know underpowering your speaker will actually ruin them as i ruined a pair of nice KEFs by using a 50w amp that could maybe give out 15wpc on a good day. its not about power amount, its about headroom. thats why many hardcore tube audiophiles own 5-15w tube amps and they sound great, because they have good headroom and can respond dynamically to sound, when a solid state amp "runs out of gas" it just clips and distorts BADLY, and this type of distortion can and will ruin your speakers. i looked at the specs for that onkyo, it is measured with all channels driven simultaneously, so it will give an authentic 325w with no trouble at all. more power does not always mean louder sound either, in order to notice an increase of output you would have to compare a 100w amp to a 500w one.