the nad belongs to a different class.
between the tjoeb and the arcam, i would say the tjoeb would fit your taste for warm sound.
arcam is also good kaya lang mejo matigas tumunog, kulang sa finesse though the detail, stage and tonal balance is really good.
it stands for "new tube" a marantz cd4000 modified somewhere in holland. maganda siya but still, you need to ensure it fits well synergized with the rest of your gears.
i believe a standard model would go for 51tphp and the super tjoeb model would go for 90tphp.
i thing for sure, if you have found a synergy with this source, its going to give you many years of sonic pleasure...di nga lang siya ganon ka"pogi"...hehehe