I agree that ka band is much more tolerant of rain than ku band,but a heavy rain will knock it right out. I lose the signal on my Directv at the same time as the Wildblue signal goes down.
I have gone below 80% of the advertised speed the few times I have been on in the evening,but over all I am at or above the advertised down load speed.
I haven't tested the up load speed that often, but I don't remember ever getting the 256 that is advertised. I am happy if I can upload at 20kps consistently.
Most of my neighbors have switched to Wildblue from Hughes and most of us are very happy when we compare our present service with what we had before.
Before Hughes I had Starband, which used a phone line to upload and a large dish to download. The highest download(log on) speed was 250kps and up load was 28kps(log on) or 3-5 kps actual speed.
Satellite is the worst way to get the Internet, except dial up. The monthly fees are expensive for what you get, the installation is expensive and the technology is fickle at best. But, there aren't many other options and the other other available options have their drawbacks as well.
The FAP policy of Wildblue is also much better than Hughes.