Great question. I am looking forward to someone with experience answering the question.
I have always had a very soft spot for Rowland stuff. Really excellent sounding, low noise floor and natural, musical detailed sound.
I would right down the costs of their preamp / amp combos and integrates in ascending order and I would think they would fall in order of better sound / investment. Just a data point, but at this level of price I would think you get the sound quality / cost.
Of course if you are serious about buying this, an audition is mandatory, even if you need to fly there.