received the yx550 datablaster today, fast shipping from solidsignal in michigan where I found the best price, and setup was a breeze. I installed the antenna in my living room, outdoor installation is not an option for me, and put the receiver in the basement underneath the master bedroom.
results:
pros: definitely have a stronger and more reliable connection. I used to have to keep a device in one place to get a 4G connection and can now walk around the house and receive signal. I also get 4 bars in the basement where I did not receive any signal before.
cons: speeds are only about average to what they were before, maybe just a little faster. That's not the main reason I bought it but would like a little faster for the money.
conclusion: I have a few weeks to experiment and see if I get faster speeds. I'll have to decide then if it's worth the $260 shipped or if I should return it.