Out of curiosity, it seems like I'm the only person on the thread actually using the Echo Link, so I wondered if any other users could sound off here.
Jorj,
I looked at the Echo Link when it was introduced but couldn't justify spending $200 for it.
Over the years, I've accumulated quite a little collection of bookshelf speakers, computer speakers and cheap Class D amps. I also have five Echos of different flavors around my house. I've used all of these to create a whole house sound system that works great.
For example, I have an older Echo Dot paired to some Dell computer speakers in my office which sounds good enough for background listening. In my living room and bedroom, I have the Dots as well as the Pi based Volumio streamers attached to bigger speakers and quality amps. In my kitchen, I have an Echo gen 3.
Best of all, with synched Echos, I've essentially created a household Sonos system for a fraction of the cost.