Bp,
Why is it more "ethical" to use your own words for you to write glowingly about someone else product than for me to give information about one of the products that I make.
In this case you promote the Herron Phono Pre, which you have done on many many occasions, spreading countless superlatives within your text. As an excellent example of this read your original post above.
I'm sure it is an excellent product. However, if this forum is to be a place of information, and please note that the OP was directly asking about alternatives to the two he already have in consideration, then a post by me that unlike yours did not include any superlatives about the unit, rather links to more information and reviews about the unit, is in order. This way the OP has one more option to look at. Also please remember that just because you prefer one product does not constitute that all other products should be excluded form consideration.
Good Listening
Peter