Both SLN and SLM have the old leather interior, and SLMs one went into CBK.
As for the 42s, they are old, but CPT and BYO have got new interiors, EHH is probably the best of them, the interior is a little old but the airplane is sound.
Purlplehelmet, its good to hear about your experience! Nice to see some good feedback, lets hope that the order for the 72-600s is confirmed over the next couple of days.
I do agree, it is time for a fleet overhaul!