It's not 100W, rather 20W, but I have REALLY enjoyed using the SunSDR2. The software is great, lots of intuitive features that work well. I have tried the ANAN, Flex 6700, QS1R and enjoy this SDR the most so far.
I recently ordered the Hardrock 50 amp to use as an IPA to fully drive my quadra when I want more than 20W. I should be able to configure this for automatic band changes to follow the radio via sharing the CAT data going to an Elecraft KAT500.
73 and GL
Greg
AB7R