am/fm tube tuners

Agreed on AM. But I love to listen to baseball games occaisionally. Not really that important on this system since I can always listen to the radio. Maybe the FM tuner is a better choice.

The Magnum Dynalab 108 looks likes it runs $3200 to $3500 used. Is it worth it? That is about 3 times what I want to spend but if it is top notch, it is interesting.

I'm perfectly happy with my vintage MR71 with Richard Modeferri mod/upgrade via audioclassics.
I've done some comparison with some other top SS performers and MR71 sounded more musical and transparent to me. The SS tuners sounded thin and light. However, it does have good bass. MR71 sounded full and round and articulate. The bass is not and punchy and dynamic but it is well above acceptable. The vocal is just lovely. It sounded like the DJ is in your room. Anyway, I still prefer tube tuners

A Fisher 100b with some simple mods (replace power supply diodes with FREDs, quality coupling caps and a good tune-up, maybe replace the 12AX7 output tube with a 5751) will sound wonderful. These can be had on ebay for ~$200. Expect to pay $500-$800 for the mods and tune-up. I'd put the sound of it's germanium bridge demodulators up agaist any PPL system on the planet.

Agreed as to Fisher FM tuners. I have a Fisher 100B with minor updates (new bridge rectifier, new output coupling caps), and it sounds very nice. In principle, a solid state tuner should have a leg up in RF performance, but there is just something "right" about the sound of a good tube tuner.

Dave