"Electro acoustic guitars sound very different to solid body electrics and give a different feel to the music."

Yes, but they also sound very different to acoustic guitars, and give a different feel to the music. That's why I still use a tie-clip mike inside the soundhole, as recommended by Martin Carthy many years ago - it makes the guitar sound like itself. Agree with highlandman there.

Any PA at all also gives a different feel to the music, from the sheer volume aspect (systems often get turned up pretty high), to the presence of the mike between performer and audience. That doesn't necessarily make it better or worse, but it does take away the back-porch feel.