Hello Drubin,
" Dob -- yes, it was a Mk II." Well, you have very good ears - you describe the sound like it was detaiuled photograph.
With your very fair demands you need to have either LA-150SE and if you can afford LA-300ME. The LA-450ME of course is the best but I cannot afford it ...now (and frankly extremely happy with what I have and not planning to change anything anytime soon)
All The Best