the best sm/ powered speaker or is it better to...

use a pair of old polks m5's w/the T.V. or even bose with a good receiver ? I understand the polk might be better . the audioengine's are computer speakers but can plug into the back of my T.V. directly
but how do speakers like this sound compared to reel speakers ? ( polk ) .
I won't as best a sound for the T.V. as I can for about $100 to $175 .

Thank you all

These were getting some high praise for cheap speakers. Point source two way speakers and good cabinet design.

Next up the list might be something from Axiom audio. Direct buy only.
Check out Genelec and Meyer Labs.
Oops I didn't see your price limitation. Keep an eye out for some used Paradigm's.