Hi
I have the AFERDI sdr , got it about 2 months ago, very impressed by it, compared to my other Rx/SDR's it hold up well it starts at 199 for the PCB only version but I really recommend the boxed version at 249. It got both network and USB interfaces I have mine located in the attic far away from the many rf noise sources in my house and can use it from all my computers.
After getting it I wish I bought it before my Perseus and spent the money l would have saved on new loop and a few more terebytes on a home has server, recording RF for later analysis gets addicting, The designer has a diversity reception model in the works also for around 350 which will be my next radio buy.
Kelvin