Well, I got to use the Echo last weekend. Spooked two going in. Called up a third but the wind had changed direction and I wasn't paying attention. Sucker came in back to my left and behind. When he popped up over the bank, I'm not sure who was most surprised.
I used a set of Energizers that I bought and everything worked fine. They also charged up fine that night so I guess I got junk batteries in the beginning.
The folks down in Texas sent me a new set of batteries to replace the bad ones and I installed them night before last. The new ones charged up perfectly, so again I guess it was bad batteries.
The caller worked great and volume was more than enough for where I was calling. My only complaint, and it's not really a complaint, is that I have to push the remote button twice at times to start the caller after it goes into sleep mode.
Not really a big deal, just someting I have to get used to.
Overall I'm really happy with it and I'd recommend it to anyone just getting into calling who doesn't want to sink a bunch of cash into a caller.