In your experience, is there any indoor FM antenna that is better than the stock T-Robbin?

The Beam Box was the best in my experiences.

It was revealing with the Marantz scope tuner.

Is putting the antenna in the attic

an option? I use a Stellar Labs

Omnidirectional and it works

pretty well.

Thanks to all for your input.  I am currently in a rental location and no attic or outdoor possibilities.  I will be moving in the Summer to a more remote location near the "Frozen Tundra" of Green Bay.  I do wish there was an online or internet solution that did not involve compressed signals and sound degradation.  

If you are not already aware, this group has good
discussion forum. All things FM tuners and antennas.

https://www.fmtunerinfo.com/

I get good results with my Magnum dynalab ST-2.   Its made by Metz 

The Metz #288 can be found for under $100