I've had the Mercury box for 10 or so years now and its been a big favourite that I've dipped into constantly. Being a vinyl fetishist of late I've tried to pick up the Mercury/Limelight LPs when I've seen them and have in the racks the main ones such as 'Rip Rig & Panic', 'Domino', 'With Benny Golson', 'I Talk With The Spirits', 'In Copenhagen' and 'Slightly Latin'. The last of these was probably the most elusive but is one of my faves. If your main preference is the CD medium you can't go wrong with the box, which has pretty good mastering. The quality of the sessions is so uniformly high that it pays to go the whole hog and get the box. There's also a bonus live cut CD with Andrew Hill of 'A Stritch In Time'.