For a normal room I would have suggested the cheaper one without hesitation, A normal TV will max out at well under 3 watts RMS per channel and probably be edging into overdrive before 1. However as you specified that it was the kitchen you need to get over the sound of cooking, washing up, Etc. and a higher level would be preferable.
My dad used to shove the volume up on the living room TV we had and once it was over a certain level you couldnt stand the distortion. Luckily it had a headphone socket so I added a small amp and a pair of speakers I had lying around and everything was solved