Vintage Selmer Paris MK 7? Get it. Great bargain now. The main reason the MK VI players didn't like the 7 was the way it hung on your neck. With the taller/shorter neck piece, it brought the sax 'in' and changed all the angles, especially for standing players. There were some other gripes too, like not being able to 'bend' notes. To me, I would simply get a Series III neck for it which is just like a late VI. That fixes everything.