jeff_pvd
Welcome! Good to see yo here today. Thank You for sharing your Thiel 03s experience. After 34 years, you are certainly due for an upgrade. IMO, the sweet spot is a pair of CS 2.4 loudspeakers. These are easily found all over the internet.
Model CS 2.4 can be placed 8-10 feet apart. Then, 2-3 feet away from back walls/side walls. This particular speaker sounds great with as little as 75 watts up to 200 watts per channel (wpc). Again, easy to drive and easy to place without too much fuss. Most sellers are honest about the condition of a demo/used pair of Thiel Audio loudspeakers.
What other gear is in your system? I look forward in reading more about your Musical taste.
Happy Listening!