The Telefunken Studio 1 or 1M's tuner is probably the best. Good selectivity/sensitivity with
a very high signal to noise ratio when compared to all other boxes.
Keep in mind that these boxes are getting old and certain electronic components
within the tuner will eventually drift out of spec which will hinder performance.
You can have two identical boxes with different results due to one of tuners
being misaligned more than the other.