Truzi
I will be dabbling in 8mm and Super 8 in a few months. I'm slowly acquiring items I will need. To start I will be using Tri-X reversal Super 8 and Fomapan R100 8mm; color may come later. I've most the chemicals I need to mix the solutions - doing it correctly is another story 
I have cameras, projectors, a couple screens, and a table-top editor. I will likely purchase a Lomo UPB tank (and slitter for the double-8 film).
Can anyone suggest current (new) products and online vendors for the following in both 8mm and Super 8? (I'm in the U.S.A.)
50-foot reels
leader
splicing tape
I can find these items easily by searching the web, but figured it best to ask for experience-based recommendations.
Also, is there anything else I might need?

I have cameras, projectors, a couple screens, and a table-top editor. I will likely purchase a Lomo UPB tank (and slitter for the double-8 film).
Can anyone suggest current (new) products and online vendors for the following in both 8mm and Super 8? (I'm in the U.S.A.)
50-foot reels
leader
splicing tape
I can find these items easily by searching the web, but figured it best to ask for experience-based recommendations.
Also, is there anything else I might need?