suggestion for turntable upgrade

You don't say what you want more, or less, of. Which makes it a bit of a popularity contest rather than finding something that is consonant with your listening bias.

That said, a Garrard 301 or 401 or a Thorens TD124 will give you a very different set of strengths than the excellent Linn. You might just fall in love with them. YMMV.

For $2,395.00, Acoustic Signature Wow XL should be on your short list.

Acoustic signature looks like a VPI Scout.

Does anyone know of the build quality of the Music Hall?

Be bold, look into U-Turn Audio units. Great sound, great value. Why not try, you will be surprised.

A Linn/Ittok is better than all of the alternatives you have listed. I would suggest a Naim Armageddon power supply for your Linn. Alternatively, a Lyra Delos cartridge is also within your budget. Either of these on your Linn would smoke any turntable you could buy under $2500.