Two things for the Dillon 650 (and no, I haven't gone back and looked at all the forty-odd pages in this thread, so if they've already been done, sorry):
1. Light on the subject, applies to any reloading press. Lots of people want to hardwire a light into their setups, which is fine, but I prefer the cheap little LED light illustrated, from Amazon. Three AAA batteries power the LED for a LONG time, and the gooseneck allows the light to shine where it's needed. The whole thing just clips to the black upright tube....
2. The "primers on the floor" problem, where a certain number end up on the floor, rather than in Dillon's misbegotten primer cup. {CAVEAT: My Dillon sits on a Strong Mount, so there may not be clearance for a press that is bolted directly to the bench.} There are some pretty creative solutions out there to this problem, but mine isn't. What works perfectly is a .303 British case (some Aussie put up a YT video on this) under the primer discharge, with no alterations needed. I drilled out the case head with a 5/16 drill. Then I just backed out the two hex-head screws holding the Dillon primer cup bracket in place, no need to remove the bracket. The case is rimmed, so the rim just slides in between the loosened bracket and the press frame. Retighten screws, then just put a piece of 7/16 OD / 5/16 ID vinyl in the appropriate length to reach your bottle, bucket, etc. This size tubing is cheap, widely available, and is a perfect interference fit on the case neck of the .303. You may have to hunt down a .303 British case (one guy said he used .45 Colt), but I was lucky in that I had both the case and an old piece of the correct tubing. Good to go, minimal effort.