The Sony TMR-BT10 unit arrived and I definately like it more than the Infinxxx.
Pros:
All audio goes through it. Music, videos, games, phone rings, call audio, everything I tried went through it. Anything you'd hear in the earbuds you'll hear in your BT headset. And it sounded just as good as the Infinxxx.
Because the only thing touching the phone is the headphone jack, it doesn't take away from holding the phone while playing games and whatever else. The Infinxxx, by contrast, adds almost an inch to the bottom of the phone which gets in the way in a lot of situations such as action games.
The Sony unit has it's own rechargable battery so it's not tapping the already weak iPhone battery. It's supposed to last 11 hours after a few charge cycles.
The volume controls on the phone alter the volume of the audio through this unit. With the Infinxxx, you can only adjust the volume from the headset. Adjusting volume on the phone as no effect when using the Infinxxx.
The Sony unit seems to remember what it pairs with so once you pair with a headset, you don't need to do it again. The Infinxxx requires you to pair the headset each time you want to use it. Not that it's hard, but it's time consuming.
I'm less worried about physical damage with the Sony unit, also. The headphone jack is small and the cord is flexible so there's much less chance of something snapping off in my pocket. The Infinxxx feels solid enough but who knows what might happen if the phone was dropped and it landed on the Infinxxx, I was tackled on the driveway (broke an expensive HTC phone that way!) and so on.
The Sony unit works with anything that outputs audio through a standard headphone jack. This is specifically about the iPhone, of course, but it'll work with a lot of phones, radios, stereo units, TVs, computers, anything that accepts a standard headphone jack. This will be way nice at the gym where the TVs only work with headsets (no speakers) and headsets with cords are easily tangled in the equipment. The Infinxxx unit works with the iPhone and iPod, period.
The Sony unit, being from Sony, is cheaper and far more accessable than the Infinxxx which took weeks to get here. The Sony took 4 days and cost about $20 less.
Cons:
It's larger and heavier than the Infinxxx. I'm assuming this is because of the battery.
It comes with a charger base that's several times larger than the unit itself. It would have been nice if I could have plugged the AC adapter right into the BT unit itself. Instead, I had to make desk space for the base.
The cord is only a foot long and hard to get tangled but there's still a cord there. This is a mixed con, tho. There are upsides to the cord.
For me, the Sony unit is the winner. The Infinxxx unit certainly has it's advantages and, to that end, if someone wants to buy mine, let me know before next week (Dec 15) as I'll put it on ebay then. That's my opinion, your mileage may vary.
Note: Your headset MUST pair with the passcode "0000" or this unit won't work. I'd guess it's the same with the Infinxxx since there's no way to tell either unit to use a different passcode.
