You are not alone. My SDS100 will be going to its new home tomorrow. And I did jump through a few hoops and I gave it a chance. It can't even touch the G4 here in the Phoenix metro area. I mean, we are talking oceans apart in performance. Believe me, I fell in love with many features on the SDS100, but performance was always number one, and it failed there. I did comparisons, talked to others, met people, tried tweaks, tried many locations, multiple systems, different types of systems, etc. It just can't compete with the G4/5. It is what it is. I'm glad I spent some time trying, but I can understand that some don't have the spare time or desire to do so.
I now own a pair of G4s, along with a quality group of analog scanners on a multicoupler with a good antenna on a mast at 30', and my needs are met for now as a scanner hobbyist. And by the way, I want to say that I'm not a "Uni-hater". The best scanner ever built in my view was the 780. Overall nothing touches it to this day in my testing. But of course it isn't digital, and I'm willing to look to any brand that can deliver. For now that means Unication. I will purchase the new Whistler when it comes out too. I'm just saying, I tried to give this device a fair shot, but came to the same conclusion as the OP. Don't feel bad, you are not alone.