I don't miss any arrangers I had in the past, as the new ones are generally superior to the old...plus, nowadays, a mid-range arranger can do far more than a TOTL of only a few years ago.

Keyboards I would regret selling?

Perhaps my old B-3 and two 147RV Leslies...I sold my Roland Jupiter 8 several years ago, but was luckily able to buy it back in the same pristine condition...it even had the same patches I put in the memory banks.

All the other sounds I may use like Wurly, Rhodes, and DX-7 type sounds (and even a couple of great B-3 sims) are already on my Yamaha arranger and realistic enough to preclude going back to vintage gear and it's upkeep and maintenance.

Ian