psywzrd: yes, I feel your frustration. I think it is a step back from the ST3. I know because I just ordered the S4 for my wife. I love my ST3, and I thought the S4 would be at least as good, plus new function like bluetooth streaming for my Navigon program. But no, I find it more cumbersome than the ST3 which is just great. Here minuses and plus compare to the S3.
cons:
-1. no vibration auto reconnect - on the ST3, when you get back in your car, it feels the vibration, reconnect, then announce "connected to phone." Just brilliant.
-2. to many steps to voice dial - on the ST3, push one botton, then say "call [name] [home|cell]". On the S4, push one button, say "phone menu", wait for the beep, say "call [name] [home|cell]". Too many steps.
-3. when on battery saving mode, the thing would announce that voice trigger is off when it is about to be off. I wish there was a way to turn that announcement off. I find it unnecessary.
-4. touch button is easy to trigger. I find myself accidentally adjust the volume or trigger voice command a lot when I adjust my visor and brush those touch button by accident. On the ST3, they are physical bottons so you are much unlikely do push them by accident.
pluses:
+1. slicker looking
+2. better speaker (I think)
+3. more voice commands. You can use your voice to check battery level, if you are connected, enter pair mode, call back last caller, redial, etc. You can also ask it to tell you all available commands.
+4. bluetooth streaming. I was blown away by the speaker quality. The ST3 has a really good speaker, the S4 is even much better. I tested streaming Itune to it and while it's not hifi by any reasonable stretch of imagination, it was pretty good to the point that after a while I forgot that it was a tiny hand free speaker phone. It's loud. I also listened to a few Tales2Go audiobooks on it with a little kid and it sounded great. So, for phone calls and navigation the sound quality is great.
The S4 I have has firmware 1.5. There is a new 1.6 firmware, but I am doubtful it addresses any of the cons I listed. I will download that any way tomorrow.
In conclusion, the ST3 is a brilliant piece of engineering. The S4 added more functions, but some are not so well thought out. Other than the vibration sensor which the S4 doesn't have and the sensitive touch buttons on the S4 that easy to activate by accident, I think if BlueAnt wants to they could release the firmware that addresses many of the issues I listed. BlueAnt seems to be one rare company that used to think outside the box and came up with brilliant and simple solutions. I hope they make some changes to the S4 firmware for the better. I am still deciding whether to send it back and get another ST3.
If you just want a speaker phone, get the ST3.
pros: